Varien_Autoload::getFileFromClassName PHP Метод

    public static function getFileFromClassName($className)
    {
        $className = ltrim($className, '\\');
        $fileName = '';
        $namespace = '';
        if ($lastNsPos = strrpos($className, '\\')) {
            $namespace = substr($className, 0, $lastNsPos);
            $className = substr($className, $lastNsPos + 1);
            $fileName = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
        }
        $fileName .= str_replace(' ', DIRECTORY_SEPARATOR, ucwords(str_replace('_', ' ', $className))) . '.php';
        return $fileName;
    }