/**
* Persists an document as part of the current unit of work.
*
* @param object $document The document to persist.
*/
public function persist($document)
{
$class = $this->dm->getClassMetadata(get_class($document));
if ($class->isEmbeddedDocument || $class->isMappedSuperclass) {
throw MongoDBException::cannotPersistEmbeddedDocumentOrMappedSuperclass($class->name);
}
$visited = array();
$this->doPersist($document, $visited);
}