private function restoreValueFromXmlString($xmlString)
{
$dom = new DOMDocument('1.0', 'utf-8');
$authors = array();
if ($dom->loadXML($xmlString) === true) {
foreach ($dom->getElementsByTagName('author') as $author) {
$authors[] = array('id' => $author->getAttribute('id'), 'name' => $author->getAttribute('name'), 'email' => $author->getAttribute('email'));
}
}
return $authors;
}