You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ValueAddTransformer.go
    path of file: ./repos/devspace/vendor/sigs.k8s.io/kustomize/api/internal/builtins
    
    the code of the file until where you have to start completion: // Code generated by pluginator on ValueAddTransformer; DO NOT EDIT.
// pluginator {unknown  1970-01-01T00:00:00Z  }

package builtins

import (
	"fmt"
	"path/filepath"
	"strings"

	"sigs.k8s.io/kustomize/api/filters/namespace"
	"sigs.k8s.io/kustomize/api/filters/valueadd"
	"sigs.k8s.io/kustomize/api/resmap"
	"sigs.k8s.io/kustomize/api/resource"
	"sigs.k8s.io/kustomize/api/types"
	"sigs.k8s.io/yaml"
)

// An 'Add' transformer inspired by the IETF RFC 6902 JSON spec Add operation.
type ValueAddTransformerPlugin s
    
func (p *ValueAddTransformerPlugin) Transform(m resmap.ResMap) (err error) {
	for _, t := range p.Targets {
		var resources []*resource.Resource
		if t.Selector == nil {
			resources = m.Resources()
		} else {
			resources, err = m.Select(*t.Selector)
			if err != nil {
				return err
			}
		}
		// TODO: consider t.NotSelector if implemented
		for _, res := range resources {
			if t.FieldPath == types.MetadataNamespacePath {
				err = res.ApplyFilter(namespace.Filter{
					Namespace: p.Value,
				})
			} else {
				err = res.ApplyFilter(valueadd.Filter{
					Value:            p.Value,
					FieldPath:        t.FieldPath,
					FilePathPosition: t.FilePathPosition,
				})
			}
			if err != nil {
				return err
			}
		}
	}
	return nil
}