Since proxies can implement optional methods in a protocol that the target doesn't implement (or any method in general, not necessarily a protocol-conforming one,) - respondsToSelector: should check that the proxy has this method before the call is forwarded to the target.
Since proxies can implement optional methods in a protocol that the target doesn't implement (or any method in general, not necessarily a protocol-conforming one,)
- respondsToSelector:should check that the proxy has this method before the call is forwarded to the target.