public < T > void addListenerIfPending ( final Class < T > clazz , final Object requestCacheKey , final PendingRequestListener < T > requestListener ) { addListenerIfPending ( clazz , requestCacheKey , ( RequestListener < T > ) requestListener ) ; }
Add listener to a pending request if it exists . If no such request exists this method calls onRequestNotFound on the listener . If a request identified by clazz and requestCacheKey it will receive an additional listener .