public function getParents($pk, $options = null)
{
$path = $this->getPathFromPK($pk);
if ('/' === $path) {
return array();
}
$result = array();
$part = $path;
while ($part = substr($part, 0, strrpos($part, '/'))) {
$item = $this->getItem($part);
$result[] = $item;
}
$root = $this->getItem('/');
$root['_object'] = $this->objectKey;
$result[] = $root;
return array_reverse($result);
}