code: def raw_broadcast(self, destination, message, **kwargs):
          
          self._broadcast(destination, message, **kwargs)
docs: Broadcast a raw (unmangled) message.
          This may cause errors if the receiver expects a mangled message.
          :param destination: Topic name to send to
          :param message: Either a string or a serializable object to be sent
          :param **kwargs: Further parameters for the transport layer. For example
                 delay: Delay transport of message by this many seconds
                 headers: Optional dictionary of header entries
                 expiration: Optional expiration time, relative to sending time
                 transaction: Transaction ID if message should be part of a
                              transaction