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

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