protected static function addFormparam( \Aimeos\MW\View\Iface $view, array $prefixes )
	{
		if( isset( $GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['aimeos']['aimeos_view_formparam'] )
			&& is_callable( ( $fcn = $GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['aimeos']['aimeos_view_formparam'] ) )
		) {
			return $fcn( $view, $prefixes );
		}

		$helper = new \Aimeos\MW\View\Helper\Formparam\Standard( $view, $prefixes );
		$view->addHelper( 'formparam', $helper );

		return $view;
	}