diff --git a/file.go b/file.go
index 65d82f9..15b502b 100644
--- a/file.go
+++ b/file.go
@@ -107,6 +107,12 @@ func (f *file) Meta() map[string]interface{} {
 	return f.meta
 }
 
+func (f *file) Apply(m map[string]interface{}) {
+	for key, value := range m {
+		f.meta[key] = value
+	}
+}
+
 func (f *file) Read(p []byte) (int, error) {
 	if err := f.cache(); err != nil {
 		return 0, err
diff --git a/types.go b/types.go
index e003efa..6008515 100644
--- a/types.go
+++ b/types.go
@@ -46,13 +46,10 @@ func New(srcDir, dstDir string) Goldsmith {
 
 type File interface {
 	Path() string
-	Rename(path string)
-
 	Meta() map[string]interface{}
-
+	Apply(m map[string]interface{})
 	Read(p []byte) (int, error)
 	WriteTo(w io.Writer) (int64, error)
-	Rewrite(data []byte)
 }
 
 func NewFileFromData(path string, data []byte) File {