yii\debug\Module::getToolbarHtml PHP Method

    public function getToolbarHtml()
    {
        $url = Url::toRoute(['/' . $this->id . '/default/toolbar', 'tag' => $this->logTarget->tag]);
        return '<div id="yii-debug-toolbar" data-url="' . Html::encode($url) . '" style="display:none" class="yii-debug-toolbar-bottom"></div>';
    }