Improve builtin generation rules.

api/builtins/AnnotationsTransformer.go

@@ -0,0 +1,39 @@
+// Code generated by pluginator on AnnotationsTransformer; DO NOT EDIT.
+// pluginator {unknown  1970-01-01T00:00:00Z  }
+
+package builtins
+
+import (
+	"sigs.k8s.io/kustomize/api/resmap"
+	"sigs.k8s.io/kustomize/api/transform"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/yaml"
+)
+
+// Add the given annotations to the given field specifications.
+type AnnotationsTransformerPlugin struct {
+	Annotations map[string]string `json:"annotations,omitempty" yaml:"annotations,omitempty"`
+	FieldSpecs  []types.FieldSpec `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
+}
+
+func (p *AnnotationsTransformerPlugin) Config(
+	h *resmap.PluginHelpers, c []byte) (err error) {
+	p.Annotations = nil
+	p.FieldSpecs = nil
+	return yaml.Unmarshal(c, p)
+}
+
+func (p *AnnotationsTransformerPlugin) Transform(m resmap.ResMap) error {
+	t, err := transform.NewMapTransformer(
+		p.FieldSpecs,
+		p.Annotations,
+	)
+	if err != nil {
+		return err
+	}
+	return t.Transform(m)
+}
+
+func NewAnnotationsTransformerPlugin() resmap.TransformerPlugin {
+	return &AnnotationsTransformerPlugin{}
+}