docs: def get_approval_by_id(self, issue_id_or_key, approval_id):
          """
          Get an approval for a given approval ID
  
          :param issue_id_or_key: str
          :param approval_id: str
          :return:
          """
          url = 'rest/servicedeskapi/request/{0}/approval/{1}'.format(issue_id_or_key, approval_id)
  
          return self.get(url, headers=self.experimental_headers)