code: def field_values(self):
          
          if self._field_values is None:
              self._field_values = FieldValueList(
                  self._version,
                  assistant_sid=self._solution['assistant_sid'],
                  field_type_sid=self._solution['sid'],
              )
          return self._field_values
docs: Access the field_values
  
          :returns: twilio.rest.autopilot.v1.assistant.field_type.field_value.FieldValueList
          :rtype: twilio.rest.autopilot.v1.assistant.field_type.field_value.FieldValueList