initWithContentsOfURL_ method
Implementation
NSItemProvider? initWithContentsOfURL_(NSURL fileURL) {
final _ret = _lib._objc_msgSend_276(
_id, _lib._sel_initWithContentsOfURL_1, fileURL._id);
return _ret.address == 0
? null
: NSItemProvider._(_ret, _lib, retain: true, release: true);
}