public static function createStrictClassPath(
        $className = '')
    {
        if (is_string($className) && strlen($className) > 0) {
            // Prepend "\" if missing, to force PHP to use the global namespace.
            if ($className[0] !== '\\') {
                $className = '\\'.$className;
            }

            return $className;
        }

        return null;
    }