protected static function singleton(GatewayType $gateway_adapter, Gateway_Extras_CustomFilters $custom_filter_object) { if (!self::$instance || $gateway_adapter->isBatchProcessor()) { self::$instance = new self($gateway_adapter, $custom_filter_object); } return self::$instance; }
static function singleton(&$gateway_adapter, &$custom_filter_object) { if (!self::$instance || $gateway_adapter->isBatchProcessor()) { self::$instance = new self($gateway_adapter, $custom_filter_object); } return self::$instance; }