public function containerExists($container)
    {
        // Correct format filename
        $container = ucfirst(strtolower($container));

        // The filename to include
        $filename = $this->retrievePathToCurrentClass().
                    'Service'.DIRECTORY_SEPARATOR.'Container'.DIRECTORY_SEPARATOR.$container.'.php';

        return file_exists($filename) ? (include_once $filename) : false;
    }