app/code/community/Adyen/Payment/Helper/Payment/Data.php
public function getMethodInstance($code)
    {
        $key = self::XML_PATH_PAYMENT_METHODS . '/' . $code . '/model';
        $class = Mage::getStoreConfig($key);

        if (!$class && strpos($code, 'adyen_hpp') !== false) {
            $methodCode = substr($code, strlen('adyen_hpp_'));
            Mage::getSingleton('adyen/observer')->createPaymentMethodFromHpp(
                $methodCode, array(),
                Mage::app()->getStore(), '0'
            );
            $class = Mage::getStoreConfig($key);
        } elseif (!$class && strpos($code, 'adyen_oneclick') !== false) {
            $methodCode = substr($code, strlen('adyen_oneclick_'));
            $store = Mage::getSingleton('adminhtml/session_quote')->getStore();
            Mage::getSingleton('adyen/billing_agreement_observer')->createPaymentMethodFromOneClick(
                $methodCode,
                array(), $store
            );
            $class = Mage::getStoreConfig($key, $store->getId());
        }

        $methodInstance = Mage::getModel($class);
        if (method_exists($methodInstance, 'setCode')) {
            $methodInstance->setCode($code);
        }

        return $methodInstance;
    }
public function getMethodInstance($code)
    {
        $key = self::XML_PATH_PAYMENT_METHODS . '/' . $code . '/model';
        $class = Mage::getStoreConfig($key);

        if (!$class && strpos($code, 'adyen_hpp') !== false) {
            $methodCode = substr($code, strlen('adyen_hpp_'));
            Mage::getSingleton('adyen/observer')->createPaymentMethodFromHpp(
                $methodCode, array(),
                Mage::app()->getStore(), '0'
            );
            $class = Mage::getStoreConfig($key);
        } elseif (!$class && strpos($code, 'adyen_oneclick') !== false) {
            $methodCode = substr($code, strlen('adyen_oneclick_'));
            $store = Mage::getSingleton('adminhtml/session_quote')->getStore();
            Mage::getSingleton('adyen/billing_agreement_observer')->createPaymentMethodFromOneClick(
                $methodCode,
                array(), $store
            );
            $class = Mage::getStoreConfig($key, $store->getId());
        }

        $methodInstance = Mage::getModel($class);
        if (method_exists($methodInstance, 'setCode')) {
            $methodInstance->setCode($code);
        }

        return $methodInstance;
    }
public function getMethodInstance ( $ code ) { $ key = self :: XML_PATH_PAYMENT_METHODS . '/' . $ code . '/model' ; $ class = Mage :: getStoreConfig ( $ key ) ; if ( ! $ class && strpos ( $ code , 'adyen_hpp' ) !== false ) { $ methodCode = substr ( $ code , strlen ( 'adyen_hpp_' ) ) ; Mage :: getSingleton ( 'adyen/observer' ) -> createPaymentMethodFromHpp ( $ methodCode , array ( ) , Mage :: app ( ) -> getStore ( ) , '0' ) ; $ class = Mage :: getStoreConfig ( $ key ) ; } elseif ( ! $ class && strpos ( $ code , 'adyen_oneclick' ) !== false ) { $ methodCode = substr ( $ code , strlen ( 'adyen_oneclick_' ) ) ; $ store = Mage :: getSingleton ( 'adminhtml/session_quote' ) -> getStore ( ) ; Mage :: getSingleton ( 'adyen/billing_agreement_observer' ) -> createPaymentMethodFromOneClick ( $ methodCode , array ( ) , $ store ) ; $ class = Mage :: getStoreConfig ( $ key , $ store -> getId ( ) ) ; } $ methodInstance = Mage :: getModel ( $ class ) ; if ( method_exists ( $ methodInstance , 'setCode' ) ) { $ methodInstance -> setCode ( $ code ) ; } return $ methodInstance ; }
Retrieve method model object

@param   string $code
@return  Mage_Payment_Model_Method_Abstract|false
Retrieve method model object