public function addClassNamespace($sDirectory, $sNamespace, $sSeparator = '.', array $aProtected = array())
    {
        // Valid separator values are '.' and '_'. Any other value is considered as '.'.
        $sSeparator = trim($sSeparator);
        if($sSeparator != '_')
        {
            $sSeparator = '.';
        }
        jaxon()->addClassDir(trim($sDirectory), trim($sNamespace), $sSeparator, $aProtected);
    }