def validation_requests(self):
        """
        Access the validation_requests

        :returns: twilio.rest.api.v2010.account.validation_request.ValidationRequestList
        :rtype: twilio.rest.api.v2010.account.validation_request.ValidationRequestList
        """
        if self._validation_requests is None:
            self._validation_requests = ValidationRequestList(self._version, account_sid=self._solution['sid'], )
        return self._validation_requests