internal/png/stdlibwriter.go
func Encode(w io.Writer, m image.Image) error {
	var e Encoder
	return e.Encode(w, m)
}
func Encode(w io.Writer, m image.Image) error {
	var e Encoder
	return e.Encode(w, m)
}
func Encode ( w io . Writer , m image . Image ) error { var e Encoder return e . Encode ( w , m ) }
// Encode writes the Image m to w in PNG format. Any Image may be
// encoded, but images that are not image.NRGBA might be encoded lossily.
Encode writes the Image m to w in PNG format . Any Image may be encoded but images that are not image . NRGBA might be encoded lossily .