[NO TESTS NEEDED] Refactor generated code

Extracted common functionality to util function.

Signed-off-by: Matej Vasek <mvasek@redhat.com>

97 files changed, 279 insertions, 5211 deletions

diff --git a/pkg/bindings/containers/types_attach_options.go b/pkg/bindings/containers/types_attach_options.go
index 88ade89b4..e806d161b 100644
--- a/pkg/bindings/containers/types_attach_options.go
+++ b/pkg/bindings/containers/types_attach_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *AttachOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *AttachOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithDetachKeys
diff --git a/pkg/bindings/containers/types_checkpoint_options.go b/pkg/bindings/containers/types_checkpoint_options.go
index 002a08e00..edac04ec4 100644
--- a/pkg/bindings/containers/types_checkpoint_options.go
+++ b/pkg/bindings/containers/types_checkpoint_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *CheckpointOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *CheckpointOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithExport
diff --git a/pkg/bindings/containers/types_commit_options.go b/pkg/bindings/containers/types_commit_options.go
index 006fe7ae7..f3e0a16fc 100644
--- a/pkg/bindings/containers/types_commit_options.go
+++ b/pkg/bindings/containers/types_commit_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *CommitOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *CommitOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAuthor
diff --git a/pkg/bindings/containers/types_create_options.go b/pkg/bindings/containers/types_create_options.go
index 914a6ed3e..4ef3be2b4 100644
--- a/pkg/bindings/containers/types_create_options.go
+++ b/pkg/bindings/containers/types_create_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *CreateOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *CreateOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_diff_options.go b/pkg/bindings/containers/types_diff_options.go
index ebf3a7ad8..952e149e9 100644
--- a/pkg/bindings/containers/types_diff_options.go
+++ b/pkg/bindings/containers/types_diff_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *DiffOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *DiffOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_execinspect_options.go b/pkg/bindings/containers/types_execinspect_options.go
index 772318cd3..2ceb41878 100644
--- a/pkg/bindings/containers/types_execinspect_options.go
+++ b/pkg/bindings/containers/types_execinspect_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExecInspectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExecInspectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_execstart_options.go b/pkg/bindings/containers/types_execstart_options.go
index 9a032d200..e5b73bc7b 100644
--- a/pkg/bindings/containers/types_execstart_options.go
+++ b/pkg/bindings/containers/types_execstart_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExecStartOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExecStartOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_execstartandattach_options.go b/pkg/bindings/containers/types_execstartandattach_options.go
index 6bc288de3..1b9276c8c 100644
--- a/pkg/bindings/containers/types_execstartandattach_options.go
+++ b/pkg/bindings/containers/types_execstartandattach_options.go
@@ -4,12 +4,8 @@ import (
 	"bufio"
 	"io"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -18,60 +14,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExecStartAndAttachOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExecStartAndAttachOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithOutputStream
diff --git a/pkg/bindings/containers/types_exists_options.go b/pkg/bindings/containers/types_exists_options.go
index 6a9086c78..ee822ab88 100644
--- a/pkg/bindings/containers/types_exists_options.go
+++ b/pkg/bindings/containers/types_exists_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExistsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExistsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithExternal
diff --git a/pkg/bindings/containers/types_export_options.go b/pkg/bindings/containers/types_export_options.go
index 595d2cf87..03eac2bad 100644
--- a/pkg/bindings/containers/types_export_options.go
+++ b/pkg/bindings/containers/types_export_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExportOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExportOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_healthcheck_options.go b/pkg/bindings/containers/types_healthcheck_options.go
index 3e2b445af..ac6d67f63 100644
--- a/pkg/bindings/containers/types_healthcheck_options.go
+++ b/pkg/bindings/containers/types_healthcheck_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *HealthCheckOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *HealthCheckOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_init_options.go b/pkg/bindings/containers/types_init_options.go
index 5a107435e..7365bcd25 100644
--- a/pkg/bindings/containers/types_init_options.go
+++ b/pkg/bindings/containers/types_init_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *InitOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *InitOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_inspect_options.go b/pkg/bindings/containers/types_inspect_options.go
index 347521488..fb3e70a9d 100644
--- a/pkg/bindings/containers/types_inspect_options.go
+++ b/pkg/bindings/containers/types_inspect_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *InspectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *InspectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithSize
diff --git a/pkg/bindings/containers/types_kill_options.go b/pkg/bindings/containers/types_kill_options.go
index 0fdbef2f1..5acb0c67d 100644
--- a/pkg/bindings/containers/types_kill_options.go
+++ b/pkg/bindings/containers/types_kill_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *KillOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *KillOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithSignal
diff --git a/pkg/bindings/containers/types_list_options.go b/pkg/bindings/containers/types_list_options.go
index 51ae98dac..8e872c99e 100644
--- a/pkg/bindings/containers/types_list_options.go
+++ b/pkg/bindings/containers/types_list_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ListOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ListOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/containers/types_log_options.go b/pkg/bindings/containers/types_log_options.go
index 51e01f1b4..a69570d0e 100644
--- a/pkg/bindings/containers/types_log_options.go
+++ b/pkg/bindings/containers/types_log_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *LogOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *LogOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithFollow
diff --git a/pkg/bindings/containers/types_mount_options.go b/pkg/bindings/containers/types_mount_options.go
index 0fa028e72..e5cc35307 100644
--- a/pkg/bindings/containers/types_mount_options.go
+++ b/pkg/bindings/containers/types_mount_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *MountOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *MountOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_mountedcontainerpaths_options.go b/pkg/bindings/containers/types_mountedcontainerpaths_options.go
index abfe9d95e..f0536abaa 100644
--- a/pkg/bindings/containers/types_mountedcontainerpaths_options.go
+++ b/pkg/bindings/containers/types_mountedcontainerpaths_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *MountedContainerPathsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *MountedContainerPathsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_pause_options.go b/pkg/bindings/containers/types_pause_options.go
index 5f15035d9..8497a24a8 100644
--- a/pkg/bindings/containers/types_pause_options.go
+++ b/pkg/bindings/containers/types_pause_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PauseOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PauseOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_prune_options.go b/pkg/bindings/containers/types_prune_options.go
index 99a85584e..2ea963c97 100644
--- a/pkg/bindings/containers/types_prune_options.go
+++ b/pkg/bindings/containers/types_prune_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PruneOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PruneOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithFilters
diff --git a/pkg/bindings/containers/types_remove_options.go b/pkg/bindings/containers/types_remove_options.go
index 99947f607..b9dea71a1 100644
--- a/pkg/bindings/containers/types_remove_options.go
+++ b/pkg/bindings/containers/types_remove_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RemoveOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RemoveOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithIgnore
diff --git a/pkg/bindings/containers/types_rename_options.go b/pkg/bindings/containers/types_rename_options.go
index 05d7138cd..c148f6730 100644
--- a/pkg/bindings/containers/types_rename_options.go
+++ b/pkg/bindings/containers/types_rename_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RenameOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RenameOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithName
diff --git a/pkg/bindings/containers/types_resizeexectty_options.go b/pkg/bindings/containers/types_resizeexectty_options.go
index 554d6fb85..256e5299b 100644
--- a/pkg/bindings/containers/types_resizeexectty_options.go
+++ b/pkg/bindings/containers/types_resizeexectty_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ResizeExecTTYOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ResizeExecTTYOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithHeight
diff --git a/pkg/bindings/containers/types_resizetty_options.go b/pkg/bindings/containers/types_resizetty_options.go
index a018993eb..4f2958ba0 100644
--- a/pkg/bindings/containers/types_resizetty_options.go
+++ b/pkg/bindings/containers/types_resizetty_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ResizeTTYOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ResizeTTYOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithHeight
diff --git a/pkg/bindings/containers/types_restart_options.go b/pkg/bindings/containers/types_restart_options.go
index fa1019a1f..8c791ae67 100644
--- a/pkg/bindings/containers/types_restart_options.go
+++ b/pkg/bindings/containers/types_restart_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RestartOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RestartOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithTimeout
diff --git a/pkg/bindings/containers/types_restore_options.go b/pkg/bindings/containers/types_restore_options.go
index 793222af3..e0204a677 100644
--- a/pkg/bindings/containers/types_restore_options.go
+++ b/pkg/bindings/containers/types_restore_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RestoreOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RestoreOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithIgnoreRootfs
diff --git a/pkg/bindings/containers/types_shouldrestart_options.go b/pkg/bindings/containers/types_shouldrestart_options.go
index e9585dc61..b0aeff09c 100644
--- a/pkg/bindings/containers/types_shouldrestart_options.go
+++ b/pkg/bindings/containers/types_shouldrestart_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ShouldRestartOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ShouldRestartOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_start_options.go b/pkg/bindings/containers/types_start_options.go
index 0ca2ee832..60e061c79 100644
--- a/pkg/bindings/containers/types_start_options.go
+++ b/pkg/bindings/containers/types_start_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *StartOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *StartOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithDetachKeys
diff --git a/pkg/bindings/containers/types_stats_options.go b/pkg/bindings/containers/types_stats_options.go
index 1ecd99536..ce0fdfe87 100644
--- a/pkg/bindings/containers/types_stats_options.go
+++ b/pkg/bindings/containers/types_stats_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *StatsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *StatsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithStream
diff --git a/pkg/bindings/containers/types_stop_options.go b/pkg/bindings/containers/types_stop_options.go
index fcc5b1be8..14ece3a43 100644
--- a/pkg/bindings/containers/types_stop_options.go
+++ b/pkg/bindings/containers/types_stop_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *StopOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *StopOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithIgnore
diff --git a/pkg/bindings/containers/types_top_options.go b/pkg/bindings/containers/types_top_options.go
index 2f04a2069..0481abe9a 100644
--- a/pkg/bindings/containers/types_top_options.go
+++ b/pkg/bindings/containers/types_top_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *TopOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *TopOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithDescriptors
diff --git a/pkg/bindings/containers/types_unmount_options.go b/pkg/bindings/containers/types_unmount_options.go
index ede1dbdc7..c32747e3a 100644
--- a/pkg/bindings/containers/types_unmount_options.go
+++ b/pkg/bindings/containers/types_unmount_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *UnmountOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *UnmountOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_unpause_options.go b/pkg/bindings/containers/types_unpause_options.go
index 0004219bf..5f17067af 100644
--- a/pkg/bindings/containers/types_unpause_options.go
+++ b/pkg/bindings/containers/types_unpause_options.go
@@ -2,12 +2,8 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *UnpauseOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *UnpauseOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/containers/types_wait_options.go b/pkg/bindings/containers/types_wait_options.go
index 7ff6fc6f0..42ee0c316 100644
--- a/pkg/bindings/containers/types_wait_options.go
+++ b/pkg/bindings/containers/types_wait_options.go
@@ -2,13 +2,9 @@ package containers
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/libpod/define"
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -17,60 +13,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *WaitOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *WaitOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithCondition
diff --git a/pkg/bindings/generate/types_kube_options.go b/pkg/bindings/generate/types_kube_options.go
index 7d7b5d335..5d34f4bee 100644
--- a/pkg/bindings/generate/types_kube_options.go
+++ b/pkg/bindings/generate/types_kube_options.go
@@ -1,13 +1,9 @@
 package generate
 
 import (
-	"errors"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *KubeOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *KubeOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithService
diff --git a/pkg/bindings/generate/types_systemd_options.go b/pkg/bindings/generate/types_systemd_options.go
index 132904cf1..dc7378888 100644
--- a/pkg/bindings/generate/types_systemd_options.go
+++ b/pkg/bindings/generate/types_systemd_options.go
@@ -1,13 +1,9 @@
 package generate
 
 import (
-	"errors"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *SystemdOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *SystemdOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithUseName
diff --git a/pkg/bindings/generator/generator.go b/pkg/bindings/generator/generator.go
index f65d136ea..fc06fedd9 100644
--- a/pkg/bindings/generator/generator.go
+++ b/pkg/bindings/generator/generator.go
@@ -27,79 +27,31 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *{{.StructName}}) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *{{.StructName}}) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
-`
 
-var fieldTmpl = `
+{{range $field := .Fields}}
 // With{{.Name}}
-func(o *{{.StructName}}) With{{.Name}}(value {{.Type}}) *{{.StructName}} {
-	v := {{.TypedValue}}
-	o.{{.Name}} = v
+func(o *{{$field.StructName}}) With{{$field.Name}}(value {{$field.Type}}) *{{$field.StructName}} {
+	v := {{$field.TypedValue}}
+	o.{{$field.Name}} = v
 	return o
 }
 
 // Get{{.Name}}
-func(o *{{.StructName}}) Get{{.Name}}() {{.Type}} {
-	var {{.ZeroName}} {{.Type}}
-	if o.{{.Name}} == nil {
-		return {{.ZeroName}}
+func(o *{{$field.StructName}}) Get{{$field.Name}}() {{$field.Type}} {
+	var {{$field.ZeroName}} {{$field.Type}}
+	if o.{{$field.Name}} == nil {
+		return {{$field.ZeroName}}
 	}
-	return {{.TypedName}}
+	return {{$field.TypedName}}
 }
+{{end}}
 `
 
 type fieldStruct struct {
@@ -143,20 +95,7 @@ func main() {
 			out.Close()
 		}
 	}()
-	bodyStruct := struct {
-		PackageName string
-		Imports     []string
-		Date        string
-		StructName  string
-	}{
-		PackageName: pkg,
-		Imports:     imports,
-		Date:        time.Now().String(),
-		StructName:  inputStructName,
-	}
 
-	body := template.Must(template.New("body").Parse(bodyTmpl))
-	fields := template.Must(template.New("fields").Parse(fieldTmpl))
 	ast.Inspect(f, func(n ast.Node) bool {
 		ref, refOK := n.(*ast.TypeSpec)
 		if refOK {
@@ -200,20 +139,28 @@ func main() {
 					fieldStructs = append(fieldStructs, fStruct)
 				} // for
 
+				bodyStruct := struct {
+					PackageName string
+					Imports     []string
+					Date        string
+					StructName  string
+					Fields      []fieldStruct
+				}{
+					PackageName: pkg,
+					Imports:     imports,
+					Date:        time.Now().String(),
+					StructName:  inputStructName,
+					Fields:      fieldStructs,
+				}
+
+				body := template.Must(template.New("body").Parse(bodyTmpl))
+
 				// create the body
 				if err := body.Execute(out, bodyStruct); err != nil {
 					fmt.Println(err)
 					os.Exit(1)
 				}
 
-				// create with func from the struct fields
-				for _, fs := range fieldStructs {
-					if err := fields.Execute(out, fs); err != nil {
-						fmt.Println(err)
-						os.Exit(1)
-					}
-				}
-
 				// close out file
 				if err := out.Close(); err != nil {
 					fmt.Println(err)
diff --git a/pkg/bindings/images/types_diff_options.go b/pkg/bindings/images/types_diff_options.go
index 4f2bf0f6b..ae4b4655b 100644
--- a/pkg/bindings/images/types_diff_options.go
+++ b/pkg/bindings/images/types_diff_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *DiffOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *DiffOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/images/types_exists_options.go b/pkg/bindings/images/types_exists_options.go
index 689c80902..9de1b9878 100644
--- a/pkg/bindings/images/types_exists_options.go
+++ b/pkg/bindings/images/types_exists_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExistsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExistsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/images/types_export_options.go b/pkg/bindings/images/types_export_options.go
index 31361deb2..dcce565f6 100644
--- a/pkg/bindings/images/types_export_options.go
+++ b/pkg/bindings/images/types_export_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExportOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExportOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithCompress
diff --git a/pkg/bindings/images/types_get_options.go b/pkg/bindings/images/types_get_options.go
index 5eb178a74..b9d00d82c 100644
--- a/pkg/bindings/images/types_get_options.go
+++ b/pkg/bindings/images/types_get_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *GetOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *GetOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithSize
diff --git a/pkg/bindings/images/types_history_options.go b/pkg/bindings/images/types_history_options.go
index becabaa59..e2cd43852 100644
--- a/pkg/bindings/images/types_history_options.go
+++ b/pkg/bindings/images/types_history_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *HistoryOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *HistoryOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/images/types_import_options.go b/pkg/bindings/images/types_import_options.go
index 6e9160b63..ff409cc7c 100644
--- a/pkg/bindings/images/types_import_options.go
+++ b/pkg/bindings/images/types_import_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ImportOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ImportOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithChanges
diff --git a/pkg/bindings/images/types_list_options.go b/pkg/bindings/images/types_list_options.go
index 12d186f6b..38d1bde70 100644
--- a/pkg/bindings/images/types_list_options.go
+++ b/pkg/bindings/images/types_list_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ListOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ListOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/images/types_load_options.go b/pkg/bindings/images/types_load_options.go
index 913568937..d17e7cc10 100644
--- a/pkg/bindings/images/types_load_options.go
+++ b/pkg/bindings/images/types_load_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *LoadOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *LoadOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithReference
diff --git a/pkg/bindings/images/types_prune_options.go b/pkg/bindings/images/types_prune_options.go
index dad83dd2f..deef211c1 100644
--- a/pkg/bindings/images/types_prune_options.go
+++ b/pkg/bindings/images/types_prune_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PruneOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PruneOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/images/types_pull_options.go b/pkg/bindings/images/types_pull_options.go
index c3c7a3dc4..2220ade26 100644
--- a/pkg/bindings/images/types_pull_options.go
+++ b/pkg/bindings/images/types_pull_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PullOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PullOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAllTags
diff --git a/pkg/bindings/images/types_push_options.go b/pkg/bindings/images/types_push_options.go
index 26a8d7e91..be14e7d78 100644
--- a/pkg/bindings/images/types_push_options.go
+++ b/pkg/bindings/images/types_push_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PushOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PushOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/images/types_remove_options.go b/pkg/bindings/images/types_remove_options.go
index fba4f63b6..964fca265 100644
--- a/pkg/bindings/images/types_remove_options.go
+++ b/pkg/bindings/images/types_remove_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RemoveOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RemoveOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/images/types_search_options.go b/pkg/bindings/images/types_search_options.go
index 812a9abd3..1321d1910 100644
--- a/pkg/bindings/images/types_search_options.go
+++ b/pkg/bindings/images/types_search_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *SearchOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *SearchOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAuthfile
diff --git a/pkg/bindings/images/types_tag_options.go b/pkg/bindings/images/types_tag_options.go
index e1217a9aa..74977e10a 100644
--- a/pkg/bindings/images/types_tag_options.go
+++ b/pkg/bindings/images/types_tag_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *TagOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *TagOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/images/types_tree_options.go b/pkg/bindings/images/types_tree_options.go
index 0a574ffc1..a07a3a647 100644
--- a/pkg/bindings/images/types_tree_options.go
+++ b/pkg/bindings/images/types_tree_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *TreeOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *TreeOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithWhatRequires
diff --git a/pkg/bindings/images/types_untag_options.go b/pkg/bindings/images/types_untag_options.go
index ced84876e..3f7ac4a5a 100644
--- a/pkg/bindings/images/types_untag_options.go
+++ b/pkg/bindings/images/types_untag_options.go
@@ -2,12 +2,8 @@ package images
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *UntagOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *UntagOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/manifests/types_add_options.go b/pkg/bindings/manifests/types_add_options.go
index 8947b1286..ae7e914b2 100644
--- a/pkg/bindings/manifests/types_add_options.go
+++ b/pkg/bindings/manifests/types_add_options.go
@@ -1,13 +1,9 @@
 package manifests
 
 import (
-	"errors"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *AddOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *AddOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/manifests/types_create_options.go b/pkg/bindings/manifests/types_create_options.go
index ee8b56df7..a8e11b828 100644
--- a/pkg/bindings/manifests/types_create_options.go
+++ b/pkg/bindings/manifests/types_create_options.go
@@ -1,13 +1,9 @@
 package manifests
 
 import (
-	"errors"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *CreateOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *CreateOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/manifests/types_exists_options.go b/pkg/bindings/manifests/types_exists_options.go
index 16527660c..df202f677 100644
--- a/pkg/bindings/manifests/types_exists_options.go
+++ b/pkg/bindings/manifests/types_exists_options.go
@@ -1,13 +1,9 @@
 package manifests
 
 import (
-	"errors"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExistsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExistsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/manifests/types_inspect_options.go b/pkg/bindings/manifests/types_inspect_options.go
index a2a40e6a4..90be7ebe3 100644
--- a/pkg/bindings/manifests/types_inspect_options.go
+++ b/pkg/bindings/manifests/types_inspect_options.go
@@ -1,13 +1,9 @@
 package manifests
 
 import (
-	"errors"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *InspectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *InspectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/manifests/types_remove_options.go b/pkg/bindings/manifests/types_remove_options.go
index d3cac775e..612d72dac 100644
--- a/pkg/bindings/manifests/types_remove_options.go
+++ b/pkg/bindings/manifests/types_remove_options.go
@@ -1,13 +1,9 @@
 package manifests
 
 import (
-	"errors"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RemoveOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RemoveOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/network/types_connect_options.go b/pkg/bindings/network/types_connect_options.go
index 930fb5531..b3cad6164 100644
--- a/pkg/bindings/network/types_connect_options.go
+++ b/pkg/bindings/network/types_connect_options.go
@@ -2,12 +2,8 @@ package network
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ConnectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ConnectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAliases
diff --git a/pkg/bindings/network/types_create_options.go b/pkg/bindings/network/types_create_options.go
index 4b4afc4a8..553c94ee5 100644
--- a/pkg/bindings/network/types_create_options.go
+++ b/pkg/bindings/network/types_create_options.go
@@ -3,12 +3,8 @@ package network
 import (
 	"net"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -17,60 +13,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *CreateOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *CreateOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithDisableDNS
diff --git a/pkg/bindings/network/types_disconnect_options.go b/pkg/bindings/network/types_disconnect_options.go
index cbcea8f7e..667da0d99 100644
--- a/pkg/bindings/network/types_disconnect_options.go
+++ b/pkg/bindings/network/types_disconnect_options.go
@@ -2,12 +2,8 @@ package network
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *DisconnectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *DisconnectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithForce
diff --git a/pkg/bindings/network/types_exists_options.go b/pkg/bindings/network/types_exists_options.go
index 0de2a00b5..4038c091a 100644
--- a/pkg/bindings/network/types_exists_options.go
+++ b/pkg/bindings/network/types_exists_options.go
@@ -2,12 +2,8 @@ package network
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExistsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExistsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/network/types_inspect_options.go b/pkg/bindings/network/types_inspect_options.go
index 3c69b37ec..ce8f58e2e 100644
--- a/pkg/bindings/network/types_inspect_options.go
+++ b/pkg/bindings/network/types_inspect_options.go
@@ -2,12 +2,8 @@ package network
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *InspectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *InspectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/network/types_list_options.go b/pkg/bindings/network/types_list_options.go
index e00430809..c16e4c05e 100644
--- a/pkg/bindings/network/types_list_options.go
+++ b/pkg/bindings/network/types_list_options.go
@@ -2,12 +2,8 @@ package network
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ListOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ListOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithFilters
diff --git a/pkg/bindings/network/types_prune_options.go b/pkg/bindings/network/types_prune_options.go
index f9685a225..c3299835f 100644
--- a/pkg/bindings/network/types_prune_options.go
+++ b/pkg/bindings/network/types_prune_options.go
@@ -2,12 +2,8 @@ package network
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PruneOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PruneOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/network/types_remove_options.go b/pkg/bindings/network/types_remove_options.go
index f42f6c256..8e4dca819 100644
--- a/pkg/bindings/network/types_remove_options.go
+++ b/pkg/bindings/network/types_remove_options.go
@@ -2,12 +2,8 @@ package network
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RemoveOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RemoveOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithForce
diff --git a/pkg/bindings/play/types_kube_options.go b/pkg/bindings/play/types_kube_options.go
index 649522908..946c19b28 100644
--- a/pkg/bindings/play/types_kube_options.go
+++ b/pkg/bindings/play/types_kube_options.go
@@ -1,13 +1,9 @@
 package play
 
 import (
-	"errors"
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *KubeOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *KubeOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAuthfile
diff --git a/pkg/bindings/pods/types_create_options.go b/pkg/bindings/pods/types_create_options.go
index 90312e6e6..942f25629 100644
--- a/pkg/bindings/pods/types_create_options.go
+++ b/pkg/bindings/pods/types_create_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *CreateOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *CreateOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/pods/types_exists_options.go b/pkg/bindings/pods/types_exists_options.go
index 0a7fbe3c9..11c6f9c05 100644
--- a/pkg/bindings/pods/types_exists_options.go
+++ b/pkg/bindings/pods/types_exists_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExistsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExistsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/pods/types_inspect_options.go b/pkg/bindings/pods/types_inspect_options.go
index 9913eaa50..172b1303c 100644
--- a/pkg/bindings/pods/types_inspect_options.go
+++ b/pkg/bindings/pods/types_inspect_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *InspectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *InspectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/pods/types_kill_options.go b/pkg/bindings/pods/types_kill_options.go
index dac91840c..e350746db 100644
--- a/pkg/bindings/pods/types_kill_options.go
+++ b/pkg/bindings/pods/types_kill_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *KillOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *KillOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithSignal
diff --git a/pkg/bindings/pods/types_list_options.go b/pkg/bindings/pods/types_list_options.go
index ab945c253..fcaeb7c1c 100644
--- a/pkg/bindings/pods/types_list_options.go
+++ b/pkg/bindings/pods/types_list_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ListOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ListOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithFilters
diff --git a/pkg/bindings/pods/types_pause_options.go b/pkg/bindings/pods/types_pause_options.go
index 177679e2a..b5aee3984 100644
--- a/pkg/bindings/pods/types_pause_options.go
+++ b/pkg/bindings/pods/types_pause_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PauseOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PauseOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/pods/types_prune_options.go b/pkg/bindings/pods/types_prune_options.go
index 389a95579..80019a2fd 100644
--- a/pkg/bindings/pods/types_prune_options.go
+++ b/pkg/bindings/pods/types_prune_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PruneOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PruneOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/pods/types_remove_options.go b/pkg/bindings/pods/types_remove_options.go
index dcb4106f8..e129d1e29 100644
--- a/pkg/bindings/pods/types_remove_options.go
+++ b/pkg/bindings/pods/types_remove_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RemoveOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RemoveOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithForce
diff --git a/pkg/bindings/pods/types_restart_options.go b/pkg/bindings/pods/types_restart_options.go
index 61b06f70e..7b95b91a1 100644
--- a/pkg/bindings/pods/types_restart_options.go
+++ b/pkg/bindings/pods/types_restart_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RestartOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RestartOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/pods/types_start_options.go b/pkg/bindings/pods/types_start_options.go
index 80e3c04d5..b0d574020 100644
--- a/pkg/bindings/pods/types_start_options.go
+++ b/pkg/bindings/pods/types_start_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *StartOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *StartOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/pods/types_stats_options.go b/pkg/bindings/pods/types_stats_options.go
index c8be15ee9..50a18bc6a 100644
--- a/pkg/bindings/pods/types_stats_options.go
+++ b/pkg/bindings/pods/types_stats_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *StatsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *StatsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/pods/types_stop_options.go b/pkg/bindings/pods/types_stop_options.go
index 22b04012e..f80d391c6 100644
--- a/pkg/bindings/pods/types_stop_options.go
+++ b/pkg/bindings/pods/types_stop_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *StopOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *StopOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithTimeout
diff --git a/pkg/bindings/pods/types_top_options.go b/pkg/bindings/pods/types_top_options.go
index da2457809..7e05a7937 100644
--- a/pkg/bindings/pods/types_top_options.go
+++ b/pkg/bindings/pods/types_top_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *TopOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *TopOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithDescriptors
diff --git a/pkg/bindings/pods/types_unpause_options.go b/pkg/bindings/pods/types_unpause_options.go
index 5e2c9454b..9575e3949 100644
--- a/pkg/bindings/pods/types_unpause_options.go
+++ b/pkg/bindings/pods/types_unpause_options.go
@@ -2,12 +2,8 @@ package pods
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *UnpauseOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *UnpauseOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/secrets/types_create_options.go b/pkg/bindings/secrets/types_create_options.go
index 7629b3e5d..254f91147 100644
--- a/pkg/bindings/secrets/types_create_options.go
+++ b/pkg/bindings/secrets/types_create_options.go
@@ -2,12 +2,8 @@ package secrets
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *CreateOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *CreateOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithDriver
diff --git a/pkg/bindings/secrets/types_inspect_options.go b/pkg/bindings/secrets/types_inspect_options.go
index 8213c73bf..0a8f8ca19 100644
--- a/pkg/bindings/secrets/types_inspect_options.go
+++ b/pkg/bindings/secrets/types_inspect_options.go
@@ -2,12 +2,8 @@ package secrets
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *InspectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *InspectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/secrets/types_list_options.go b/pkg/bindings/secrets/types_list_options.go
index eab0f5466..e232c543b 100644
--- a/pkg/bindings/secrets/types_list_options.go
+++ b/pkg/bindings/secrets/types_list_options.go
@@ -2,12 +2,8 @@ package secrets
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ListOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ListOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/secrets/types_remove_options.go b/pkg/bindings/secrets/types_remove_options.go
index 151c1d90c..43c1fb545 100644
--- a/pkg/bindings/secrets/types_remove_options.go
+++ b/pkg/bindings/secrets/types_remove_options.go
@@ -2,12 +2,8 @@ package secrets
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RemoveOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RemoveOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/system/types_disk_options.go b/pkg/bindings/system/types_disk_options.go
index 77428c10c..118d2e8d2 100644
--- a/pkg/bindings/system/types_disk_options.go
+++ b/pkg/bindings/system/types_disk_options.go
@@ -2,12 +2,8 @@ package system
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *DiskOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *DiskOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/system/types_events_options.go b/pkg/bindings/system/types_events_options.go
index dd7706178..f6717f38d 100644
--- a/pkg/bindings/system/types_events_options.go
+++ b/pkg/bindings/system/types_events_options.go
@@ -2,12 +2,8 @@ package system
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *EventsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *EventsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithFilters
diff --git a/pkg/bindings/system/types_info_options.go b/pkg/bindings/system/types_info_options.go
index 162ec3e88..bc6c67282 100644
--- a/pkg/bindings/system/types_info_options.go
+++ b/pkg/bindings/system/types_info_options.go
@@ -2,12 +2,8 @@ package system
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *InfoOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *InfoOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/system/types_prune_options.go b/pkg/bindings/system/types_prune_options.go
index f2ae5e657..c08a9baf3 100644
--- a/pkg/bindings/system/types_prune_options.go
+++ b/pkg/bindings/system/types_prune_options.go
@@ -2,12 +2,8 @@ package system
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PruneOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PruneOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithAll
diff --git a/pkg/bindings/system/types_version_options.go b/pkg/bindings/system/types_version_options.go
index b6026fa8c..fa6956677 100644
--- a/pkg/bindings/system/types_version_options.go
+++ b/pkg/bindings/system/types_version_options.go
@@ -2,12 +2,8 @@ package system
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *VersionOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *VersionOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/util/util.go b/pkg/bindings/util/util.go
index 403846355..6296fc22f 100644
--- a/pkg/bindings/util/util.go
+++ b/pkg/bindings/util/util.go
@@ -1,8 +1,13 @@
 package util
 
 import (
+	"errors"
+	"net/url"
 	"reflect"
 	"strconv"
+	"strings"
+
+	jsoniter "github.com/json-iterator/go"
 )
 
 func IsSimpleType(f reflect.Value) bool {
@@ -28,3 +33,59 @@ func SimpleTypeToParam(f reflect.Value) string {
 	}
 	panic("the input parameter is not a simple type")
 }
+
+func Changed(o interface{}, fieldName string) bool {
+	r := reflect.ValueOf(o)
+	value := reflect.Indirect(r).FieldByName(fieldName)
+	return !value.IsNil()
+}
+
+func ToParams(o interface{}) (url.Values, error) {
+	params := url.Values{}
+	if o == nil || reflect.ValueOf(o).IsNil() {
+		return params, nil
+	}
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
+	s := reflect.ValueOf(o)
+	if reflect.Ptr == s.Kind() {
+		s = s.Elem()
+	}
+	sType := s.Type()
+	for i := 0; i < s.NumField(); i++ {
+		fieldName := sType.Field(i).Name
+		if !Changed(o, fieldName) {
+			continue
+		}
+		fieldName = strings.ToLower(fieldName)
+		f := s.Field(i)
+		if reflect.Ptr == f.Kind() {
+			f = f.Elem()
+		}
+		switch {
+		case IsSimpleType(f):
+			params.Set(fieldName, SimpleTypeToParam(f))
+		case f.Kind() == reflect.Slice:
+			for i := 0; i < f.Len(); i++ {
+				elem := f.Index(i)
+				if IsSimpleType(elem) {
+					params.Add(fieldName, SimpleTypeToParam(elem))
+				} else {
+					return nil, errors.New("slices must contain only simple types")
+				}
+			}
+		case f.Kind() == reflect.Map:
+			lowerCaseKeys := make(map[string][]string)
+			iter := f.MapRange()
+			for iter.Next() {
+				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
+			}
+			s, err := json.MarshalToString(lowerCaseKeys)
+			if err != nil {
+				return nil, err
+			}
+
+			params.Set(fieldName, s)
+		}
+	}
+	return params, nil
+}
diff --git a/pkg/bindings/volumes/types_create_options.go b/pkg/bindings/volumes/types_create_options.go
index 2dcbaf611..45053e261 100644
--- a/pkg/bindings/volumes/types_create_options.go
+++ b/pkg/bindings/volumes/types_create_options.go
@@ -2,12 +2,8 @@ package volumes
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *CreateOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *CreateOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/volumes/types_exists_options.go b/pkg/bindings/volumes/types_exists_options.go
index ebfabc061..044f0501d 100644
--- a/pkg/bindings/volumes/types_exists_options.go
+++ b/pkg/bindings/volumes/types_exists_options.go
@@ -2,12 +2,8 @@ package volumes
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ExistsOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ExistsOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/volumes/types_inspect_options.go b/pkg/bindings/volumes/types_inspect_options.go
index 3176e0ef6..e6397a0d2 100644
--- a/pkg/bindings/volumes/types_inspect_options.go
+++ b/pkg/bindings/volumes/types_inspect_options.go
@@ -2,12 +2,8 @@ package volumes
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,58 +12,10 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *InspectOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *InspectOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
diff --git a/pkg/bindings/volumes/types_list_options.go b/pkg/bindings/volumes/types_list_options.go
index e7770d5ee..103515e99 100644
--- a/pkg/bindings/volumes/types_list_options.go
+++ b/pkg/bindings/volumes/types_list_options.go
@@ -2,12 +2,8 @@ package volumes
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *ListOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *ListOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithFilters
diff --git a/pkg/bindings/volumes/types_prune_options.go b/pkg/bindings/volumes/types_prune_options.go
index 78245f649..eb910e05d 100644
--- a/pkg/bindings/volumes/types_prune_options.go
+++ b/pkg/bindings/volumes/types_prune_options.go
@@ -2,12 +2,8 @@ package volumes
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *PruneOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *PruneOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithFilters
diff --git a/pkg/bindings/volumes/types_remove_options.go b/pkg/bindings/volumes/types_remove_options.go
index 13ac6a346..30cb923c7 100644
--- a/pkg/bindings/volumes/types_remove_options.go
+++ b/pkg/bindings/volumes/types_remove_options.go
@@ -2,12 +2,8 @@ package volumes
 
 import (
 	"net/url"
-	"reflect"
-	"strings"
 
 	"github.com/containers/podman/v2/pkg/bindings/util"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/pkg/errors"
 )
 
 /*
@@ -16,60 +12,12 @@ This file is generated automatically by go generate.  Do not edit.
 
 // Changed
 func (o *RemoveOptions) Changed(fieldName string) bool {
-	r := reflect.ValueOf(o)
-	value := reflect.Indirect(r).FieldByName(fieldName)
-	return !value.IsNil()
+	return util.Changed(o, fieldName)
 }
 
 // ToParams
 func (o *RemoveOptions) ToParams() (url.Values, error) {
-	params := url.Values{}
-	if o == nil {
-		return params, nil
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	s := reflect.ValueOf(o)
-	if reflect.Ptr == s.Kind() {
-		s = s.Elem()
-	}
-	sType := s.Type()
-	for i := 0; i < s.NumField(); i++ {
-		fieldName := sType.Field(i).Name
-		if !o.Changed(fieldName) {
-			continue
-		}
-		fieldName = strings.ToLower(fieldName)
-		f := s.Field(i)
-		if reflect.Ptr == f.Kind() {
-			f = f.Elem()
-		}
-		switch {
-		case util.IsSimpleType(f):
-			params.Set(fieldName, util.SimpleTypeToParam(f))
-		case f.Kind() == reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				elem := f.Index(i)
-				if util.IsSimpleType(elem) {
-					params.Add(fieldName, util.SimpleTypeToParam(elem))
-				} else {
-					return nil, errors.New("slices must contain only simple types")
-				}
-			}
-		case f.Kind() == reflect.Map:
-			lowerCaseKeys := make(map[string][]string)
-			iter := f.MapRange()
-			for iter.Next() {
-				lowerCaseKeys[iter.Key().Interface().(string)] = iter.Value().Interface().([]string)
-			}
-			s, err := json.MarshalToString(lowerCaseKeys)
-			if err != nil {
-				return nil, err
-			}
-
-			params.Set(fieldName, s)
-		}
-	}
-	return params, nil
+	return util.ToParams(o)
 }
 
 // WithForce