if (null != this.lastUpdate) {
Long now = new Date().getTime();
query.addFilter("timestamp", FilterOperator.GREATER_THAN_OR_EQUAL, (now - (MAX_CLOCK_SKEW)));
}
PreparedQuery pq = asyncDatastoreService.prepare(query);
Iterator<Entity> it = pq.asIterator();
return it;
} finally {
NamespaceManager.set(originalNamespace);
}