docs: def get_approvals(self, issue_id_or_key, start=0, limit=50):
          """
          Get all approvals on a request, for a given request ID/Key
  
          :param issue_id_or_key: str
          :param start: OPTIONAL: int
          :param limit: OPTIONAL: int
          :return:
          """
          url = 'rest/servicedeskapi/request/{}/approval'.format(issue_id_or_key)
          params = {}
          if start is not None:
              params['start'] = int(start)
          if limit is not None:
              params['limit'] = int(limit)
  
          return self.get(url, headers=self.experimental_headers, params=params).get('values')