private function getSmtpTransport(): \Swift_SmtpTransport
    {
        $object = new \Swift_SmtpTransport(
            $this->config('smtp.host'),
            $this->config('smtp.port'),
            $this->config('smtp.encryption')
        );

        return $object
            ->setUsername($this->config('smtp.username'))
            ->setPassword($this->config('smtp.password'))
        ;
    }