SBDGroupChannelCollection.h :
// Loads more page.
/// @param completionHandler The completion handler to be executed.
/// @since 3.1.0
- (void)loadMoreWithCompletionHandler:(nullable void (^)(NSArray<SBDGroupChannel *> * _Nullable channels, SBDError * _Nullable error))completionHandler;
Why is the callback(completionHandler) for this method not executed???