private function _storeError(&$form_display, &$error)
{
$retval = '';
if ($error) {
$retval .= $error->getDisplay();
}
if ($form_display->hasErrors()) {
// form has errors
$retval .= '<div class="error config-form">' . '<b>' . __('Cannot save settings, submitted configuration form contains ' . 'errors!') . '</b>' . $form_display->displayErrors() . '</div>';
}
$this->_errorHTML = $retval;
}