skeeks\cms\widgets\tree\CmsTreeWidget::_beginPjax PHP Method

    protected function _beginPjax()
    {
        if (!$this->pjax) {
            $pjaxClass = $this->pjaxClass;
            $pjaxOptions = ArrayHelper::merge($this->pjaxOptions, ['id' => 'sx-pjax-' . $this->id]);
            $this->_pjaxIsStart = true;
            $this->pjax = $pjaxClass::begin($pjaxOptions);
        }
        return $this;
    }