public function generate($page = null)
    {
        $result = $this->Proc->process($this->_xml, $this->_xsl, $this->_param, $this->_registered_php_functions);

        if ($this->Proc->isErrors()) {
            $this->setHttpStatus(Page::HTTP_STATUS_ERROR);
            return false;
        }

        parent::generate($page);

        return $result;
    }