docs: def get_message(self, block=False, timeout=None):
          """Removes and returns a RTMMessage from self._inbox
  
          Args:
              block(bool): if True block until a RTMMessage is available,
                           else it will return None when self._inbox is empty
              timeout(int): it blocks at most timeout seconds
  
          Returns:
              RTMMessage if self._inbox is not empty, else None
          """
          try:
              message = self._inbox.get(block=block, timeout=timeout)
              return message
          except Exception:
              return None