protected function _toHtml() {
        if ($this->_fixMessages()) {
            if ($this->_shouldUseInjection()) {
                $html = $this->renderView();
            } else {
                $this->_loadMessages();
                $this->_loadSavedMessages();
                if (count($this->getMessages())) {
                    $html = $this->_real_toHtml();
                } else {
                    // Prevent returning an empty <ul></ul>
                    $html = '';
                }
            }
        } else {
            $html = $this->_real_toHtml();
        }
        $this->_directCall = false;
        return $html;
    }