public function setForm(ControlCollection $form = null): Control
    {
        $this->control->setForm($form);

        return parent::setForm($form);
    }
public function setForm(ControlCollection $form = null): Control
    {
        $this->control->setForm($form);

        return parent::setForm($form);
    }
public function setForm ( ControlCollection $ form = null ) : Control { $ this -> control -> setForm ( $ form ) ; return parent :: setForm ( $ form ) ; }
Set control form.

@param ControlCollection|null $form

@return static
Set control form .