public function getOption($name)
    {
        $name = strtolower($name);

        if (array_key_exists($name, $this->_options)) {
            return $this->_options[$name];
        }

        if (array_key_exists($name, $this->_directives)) {
            return $this->_directives[$name];
        }

        Zend_Cache::throwException("Incorrect option name : {$name}");
    }