docs: 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)