app/code/community/Adyen/Payment/Helper/Payment.php
public function isHighVatCategory($paymentMethod)
    {
        if ($this->isOpenInvoiceMethod($paymentMethod->getMethod()) || Mage::helper('adyen')->isAfterPay($paymentMethod->getMethodInstance()->getInfoInstance()->getCcType())) {
            return true;
        }

        return false;
    }
public function isHighVatCategory($paymentMethod)
    {
        if ($this->isOpenInvoiceMethod($paymentMethod->getMethod()) || Mage::helper('adyen')->isAfterPay($paymentMethod->getMethodInstance()->getInfoInstance()->getCcType())) {
            return true;
        }

        return false;
    }
public function isHighVatCategory ( $ paymentMethod ) { if ( $ this -> isOpenInvoiceMethod ( $ paymentMethod -> getMethod ( ) ) || Mage :: helper ( 'adyen' ) -> isAfterPay ( $ paymentMethod -> getMethodInstance ( ) -> getInfoInstance ( ) -> getCcType ( ) ) ) { return true ; } return false ; }
Checks if HigVat Cateogry is needed

@param $paymentMethod
@return bool
Checks if HigVat Cateogry is needed