def onMessage(self, payload, isBinary):
        """
        Send the payload onto the {slack.[payload['type]'} channel.
        The message is transalated from IDs to human-readable identifiers.

        Note: The slack API only sends JSON, isBinary will always be false.
        """
        msg = self.translate(unpack(payload))
        if 'type' in msg:
            channel_name = 'slack.{}'.format(msg['type'])
            print('Sending on {}'.format(channel_name))
            channels.Channel(channel_name).send({'text': pack(msg)})
Send the payload onto the {slack.[payload['type]'} channel.
        The message is transalated from IDs to human-readable identifiers.

        Note: The slack API only sends JSON, isBinary will always be false.