Prado\Web\UI\WebControls\TRepeater::setHeaderTemplate PHP Method

    public function setHeaderTemplate($value)
    {
        if ($value instanceof \Prado\Web\UI\ITemplate || $value === null) {
            $this->_headerTemplate = $value;
        } else {
            throw new TInvalidDataTypeException('repeater_template_required', 'HeaderTemplate');
        }
    }

 /**
  * @return TRepeater new instance of TRepater to render the list of suggestions.
  */
 protected function createRepeater()
 {
     $repeater = new TRepeater();
     $repeater->setHeaderTemplate(new TAutoCompleteTemplate('<ul>'));
     $repeater->setFooterTemplate(new TAutoCompleteTemplate('</ul>'));
     $repeater->setItemTemplate(new TTemplate('<li><%# $this->DataItem %></li>', null));
     $repeater->setEmptyTemplate(new TAutoCompleteTemplate('<ul></ul>'));
     $this->getControls()->add($repeater);
     return $repeater;
 }