*/
public void testCheckpoint() throws RepositoryException, JSONException {
// We're comparing date strings here, so we need a fixed time zone.
Value.setFeedTimeZone("GMT");
MockRepositoryEventList mrel =
new MockRepositoryEventList("MockRepositoryEventLog1.txt");
MockRepository r = new MockRepository(mrel);
MockRepositoryDocument mockDoc = r.getStore().getDocByID("doc1");
Document doc = new JcrDocument(new MockJcrNode(mockDoc));
String checkpointString = JcrDocumentList.checkpoint(doc);
logger.info(checkpointString);