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

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