protected function checkDownload( $id )
	{
		$context = $this->getContext();

		/** client/html/account/download/maxcount
		 * Maximum number of file downloads allowed for an ordered product
		 *
		 * This configuration setting enables you to limit the number of downloads
		 * of a product download file. The count is the maximum number for each
		 * bought product and customer, i.e. setting the count to "3" allows
		 * a customer to download the bought product file up to three times.
		 *
		 * The default value of null enforces no limit.
		 *
		 * @param integer Maximum number of downloads
		 * @since 2016.02
		 * @category Developer
		 * @category User
		 */
		$maxcnt = $context->getConfig()->get( 'client/html/account/download/maxcount' );

		$cntl = \Aimeos\Controller\Frontend::create( $context, 'customer' );
		$item = $cntl->uses( ['order' => ['download']] )->get();

		if( ( $listItem = $item->getListItem( 'order', 'download', $id ) ) === null ) {
			$listItem = $cntl->createListItem()->setType( 'download' )->setRefId( $id );
		}

		$config = $listItem->getConfig();
		$count = (int) $listItem->getConfigValue( 'count', 0 );

		if( $maxcnt === null || $count < $maxcnt )
		{
			$config['count'] = $count++;
			$cntl->addListItem( 'order', $listItem->setConfig( $config ) )->store();

			return true;
		}

		return false;
	}