protected function addListItems( $productId, array $productIds )
	{
		if( empty( $productIds ) ) {
			return;
		}

		$manager = \Aimeos\MShop::create( $this->getContext(), 'product/lists' );
		$item = $manager->createItem();

		foreach( $productIds as $pos => $refid )
		{
			$item->setId( null );
			$item->setParentId( $productId );
			$item->setDomain( 'product' );
			$item->setType( 'bought-together' );
			$item->setPosition( $pos );
			$item->setRefId( $refid );
			$item->setStatus( 1 );

			$manager->saveItem( $item, false );
		}
	}