private function buildRequiredNotes()
    {
        // Build the required notes container
        $requireNotesContainer = $this->getHTMLDocument()->getHTMLFactory()->buildHtmlElement('div', '', '', 'form-simple-required-notes');

        // Create note
        $note = $this->getHTMLDocument()->getHTMLFactory()->buildHtmlElement('p', '', '', 'rqNote');
        $requireNotesContainer->append($note);

        $star = $this->requiredStar();
        $note->append($star);
        $title = $this->getHTMLDocument()->getHTMLFactory()->buildHtmlElement('span', 'All fields marked with asterisk are required.');
        $note->append($title);

        // Append before controls
        $this->append($requireNotesContainer);

        return $this;
    }