[NO TESTS NEEDED] Refactor generated code

Extracted common functionality to util function.

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

14 files changed, 28 insertions, 756 deletions

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)
 }