def group_membership_create(self, data, **kwargs):
        "https://developer.zendesk.com/rest_api/docs/core/group_memberships#create-membership"
        api_path = "/api/v2/group_memberships.json"
        return self.call(api_path, method="POST", data=data, **kwargs)
https://developer.zendesk.com/rest_api/docs/core/group_memberships#create-membership