def user_group_membership_show(self, user_id, id, **kwargs):
        "https://developer.zendesk.com/rest_api/docs/core/group_memberships#show-membership"
        api_path = "/api/v2/users/{user_id}/group_memberships/{id}.json"
        api_path = api_path.format(user_id=user_id, id=id)
        return self.call(api_path, **kwargs)
https://developer.zendesk.com/rest_api/docs/core/group_memberships#show-membership