yii\debug\Module::renderToolbar PHP Method

    public function renderToolbar($event)
    {
        if (!$this->checkAccess() || Yii::$app->getRequest()->getIsAjax()) {
            return;
        }
        /* @var $view View */
        $view = $event->sender;
        echo $view->renderDynamic('return Yii::$app->getModule("debug")->getToolbarHtml();');
        // echo is used in order to support cases where asset manager is not available
        echo '<style>' . $view->renderPhpFile(__DIR__ . '/assets/toolbar.css') . '</style>';
        echo '<script>' . $view->renderPhpFile(__DIR__ . '/assets/toolbar.js') . '</script>';
    }