assertNotNull(transaction);
System.out.println("Transaction started ...");
Collection root = broker.getOrCreateCollection(transaction, TestConstants.TEST_COLLECTION_URI);
assertNotNull(root);
broker.removeCollection(transaction, root);
Collection config = broker.getOrCreateCollection(transaction,
XmldbURI.create(CollectionConfigurationManager.CONFIG_COLLECTION + "/db"));
assertNotNull(config);
broker.removeCollection(transaction, config);