Nette\Forms\Controls\TextArea::getControl PHP Method

    public function getControl()
    {
        return parent::getControl()->setText($this->getRenderedValue());
    }

 /**
  * @return \Nette\Utils\Html
  */
 public function getControl()
 {
     $control = parent::getControl();
     $control->class[] = 'editor-input ckeditor';
     $control->data('novalidate', '');
     return $control;
 }