https://api.slack.com/methods/channels.history

def history(self, channel_name, **kwargs):
        """ https://api.slack.com/methods/channels.history
        """
        channel_id = self.get_channel_id(channel_name)
        self.params.update({'channel': channel_id})
        if kwargs:
            self.params.update(kwargs)
        return FromUrl('https://slack.com/api/channels.history', self._requests)(data=self.params).get()