App\Ninja\PaymentDrivers\BasePaymentDriver::gateway PHP Method

    protected function gateway()
    {
        if ($this->gateway) {
            return $this->gateway;
        }
        $this->gateway = Omnipay::create($this->accountGateway->gateway->provider);
        $this->gateway->initialize((array) $this->accountGateway->getConfig());
        return $this->gateway;
    }