stringByAppendingFormat method
stringByAppendingFormat:
Implementation
NSString stringByAppendingFormat(NSString format) {
final $ret = _objc_msgSend_1sotr3r(
object$.ref.pointer,
_sel_stringByAppendingFormat_,
format.ref.pointer,
);
return NSString.fromPointer($ret, retain: true, release: true);
}