Fatal error: Class 'Core_Foundation_IoC_Container' not found

<?php
/**

* 2007-2015 PrestaShop
*
* NOTICE OF LICENSE
*

* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to ***@*** so we can send you a copy immediately.
*

* DISCLAIMER
*

* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*

*  @author  PrestaShop SA <***@***>
*  @copyright  2007-2015 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

class Core_Business_ContainerBuilder
{
 /**
* Construct PrestaShop Core Service container
* @return Core_Foundation_IoC_Container
* @throws Core_Foundation_IoC_Exception
*/
    public function build()
    {
       <underline> <ital> $container = new Core_Foundation_IoC_Container;</ital></underline>

        $container->bind('Core_Business_ConfigurationInterface', 'Adapter_Configuration', true);
        $container->bind('Core_Foundation_Database_DatabaseInterface', 'Adapter_Database', true);

        return $container;
    }
}