Nette\Forms\Controls\BaseControl::getLabel PHP Method

    public function getLabel($caption = NULL)
    {
        $label = clone $this->label;
        $label->for = $this->getHtmlId();
        $label->setText($this->translate($caption === NULL ? $this->caption : $caption));
        return $label;
    }

 /**
  * @return Nette\Utils\Html
  */
 public function getLabelPart()
 {
     return parent::getLabel();
 }