addGroupManagerListener method Null safety

  1. @Deprecated("Use addEventHandler to instead")
void addGroupManagerListener(
  1. ChatGroupManagerListener listener
)

Registers a group manager listener.

The registered listener needs to be used together with removeGroupManagerListener.

Param listener The group manager listener to be registered.

Implementation

@Deprecated("Use addEventHandler to instead")
void addGroupManagerListener(ChatGroupManagerListener listener) {
  _listeners.remove(listener);
  _listeners.add(listener);
}