- (void)updateNewsDataSuccess: (void (^)(NSArray* data))successFeedback {
     AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
     [manager GET:@"http://api-server/resources.json"
       parameters:nil
          success:^(AFHTTPRequestOperation *operation, id responseObject) {
              // your logic here to manipulate the fetched data
 
              successFeedback(data);
          }
         failure:^(AFHTTPRequestOperation *operation, NSError *error) {
             // fail code
         }];
}