docs: def iter_grants(self, as_json=True):
          """Fetch records from the SQLite database."""
          self._connect()
          result = self.db_connection.cursor().execute(
              "SELECT data, format FROM grants"
          )
          for data, data_format in result:
              if (not as_json) and data_format == 'json':
                  raise Exception("Cannot convert JSON source to XML output.")
              elif as_json and data_format == 'xml':
                  data = self.grantxml2json(data)
              elif as_json and data_format == 'json':
                  data = json.loads(data)
              yield data
          self._disconnect()