docs: def get_custom_fields(self, search=None, start=1, limit=50):
          """
          Get custom fields. Evaluated on 7.12
          :param search: str
          :param start: long Default: 1
          :param limit: int Default: 50
          :return:
          """
          url = 'rest/api/2/customFields'
          params = {}
          if search:
              params['search'] = search
          if start:
              params['startAt'] = start
          if limit:
              params['maxResults'] = limit
          return self.get(url, params=params)