app\models\Client::getGatewayToken PHP Method

    public function getGatewayToken()
    {
        $accountGateway = $this->account->getGatewayByType(GATEWAY_TYPE_TOKEN);
        if (!$accountGateway) {
            return false;
        }
        return AccountGatewayToken::clientAndGateway($this->id, $accountGateway->id)->first();
    }