initForWritingWithMutableData_ method
Implementation
NSKeyedArchiver initForWritingWithMutableData_(NSMutableData data) {
final _ret = _lib._objc_msgSend_520(
_id, _lib._sel_initForWritingWithMutableData_1, data._id);
return NSKeyedArchiver._(_ret, _lib, retain: true, release: true);
}