Menerapkan protokol cepat di Kotlin

As of now, K/N requires many extra methods when implementing an 
Objective-C or Swift protocol. Subclassing NSObject removes this 
requirement

class Foo: BarProtocol
	// Override BarProtocol methods and all NSObject methods
    
class Foo: NSObject(), BarProtocol
	//Only need to override BarProtocol's methods
Joyous Jellyfish