code: def broadcast(self, bot, channel_type, text):
          
          self.client.broadcast.__getattr__(bot.name).__call__(_method="POST",
                                                          _params=dict(channel=channel_type),
                                                          _json=dict(message=text))
docs: Use this method to broadcast text message to all users of bot.
  
          :param bot: bot that will push user
          :type bot: Bot
          :param channel_type: one of [telegram, facebook, slack]
          :type channel_type: str
          :param text: text message
          :type text: str