/** * Retrieve vendor payment type array * * @return array */ public static function getStates() { if (is_null(self::$_states)) { self::$_states = array(self::TRANSACTION_TYPE_CREDIT => Mage::helper('sales')->__('Credit'), self::TRANSACTION_TYPE_DEBIT => Mage::helper('sales')->__('Debit')); } return self::$_states; }