initWithTimeInterval_sinceDate_ method
Implementation
NSDate initWithTimeInterval_sinceDate_(double secsToBeAdded, NSDate date) {
final _ret = _lib._objc_msgSend_170(_id,
_lib._sel_initWithTimeInterval_sinceDate_1, secsToBeAdded, date._id);
return NSDate._(_ret, _lib, retain: true, release: true);
}