Contao\ModuleMaintenance::compile PHP Method

    protected function compile()
    {
        \System::loadLanguageFile('tl_maintenance');
        $this->Template->content = '';
        $this->Template->href = $this->getReferer(true);
        $this->Template->title = \StringUtil::specialchars($GLOBALS['TL_LANG']['MSC']['backBTTitle']);
        $this->Template->button = $GLOBALS['TL_LANG']['MSC']['backBT'];
        foreach ($GLOBALS['TL_MAINTENANCE'] as $callback) {
            $this->import($callback);
            if (!$this->{$callback} instanceof \executable) {
                throw new \Exception("{$callback} is not an executable class");
            }
            $buffer = $this->{$callback}->run();
            if ($this->{$callback}->isActive()) {
                $this->Template->content = $buffer;
                break;
            } else {
                $this->Template->content .= $buffer;
            }
        }
    }