code: public void removeListener(final TypingListener typingListener) {
          MessagingListener messagingListener = typingListeners.get(typingListener);
          if (messagingListener != null) {
              client.removeListener(messagingListener);
              typingListeners.remove(typingListener);
          }
      }
docs: Removes listener for user is typing/finished typing events.
  
  @param typingListener Listener for user is typing/finished typing events.