TYPE SYSTEMS ▸ ���� -> ���� ▸ �������������������������� �����������Protocol + Generics ▸ NSProxy is gone -_-! ▸ No more method swizzling
 (And other Runtime tricks) ▸ ����������� TYPE SYSTEMS

have multiple root classes in Objective-C. For example, in the Cocoa framework both NSObject and NSProxy are root classes. Therefore, you have to explicitly define a parent class (such as NSObject) if you