allocWithZone static method
allocWithZone:
Implementation
static NSLayoutConstraint allocWithZone(ffi.Pointer<objc.NSZone> zone) {
final _ret = _objc_msgSend_1cwp428(_class_NSLayoutConstraint, _sel_allocWithZone_, zone);
return NSLayoutConstraint.castFromPointer(_ret, retain: false, release: true);
}