Bytes.unrefToData

Unreferences the bytes, and returns a pointer the same byte data contents.

As an optimization, the byte data is returned without copying if this was the last reference to bytes and bytes was created with [glib.bytes.Bytes.new_], [glib.bytes.Bytes.newTake] or [glib.byte_array.ByteArray.freeToBytes]. In all other cases the data is copied.