Returns a list of transitions that customers can perform on the request

        :param issue_id_or_key: str
        :return:

def get_customer_transitions(self, issue_id_or_key):
        """
        Returns a list of transitions that customers can perform on the request

        :param issue_id_or_key: str
        :return:
        """
        url = 'rest/servicedeskapi/request/{}/transition'.format(issue_id_or_key)

        return self.get(url, headers=self.experimental_headers)