Returning a Class that complies to a given protocol

gistfile1.txt

    Class sportsFeedManager = (Class <RPSportsBoundryProtocol>)[RPInteractor sportsFeedManager];
    
    [sportsFeedManager yahooSportsFeedWithCompletion:^(NSArray *sportsFeeds, NSError *error)
     {
         if (error)
         {
             // TODO: Handle the error;
         }
         else
         {
             // TODO: Handle a successful eresult;
         }
         
     }];