private DatastoreService ds;
@Override
protected void setUp() throws Exception {
super.setUp();
txnIdAnswer = new TxnIdAnswer();
ds = DatastoreServiceFactory.getDatastoreService();
recordingImpl =
new DatastoreServiceRecordingImpl(mockDatastoreService, ds, mockTxn, txnIdAnswer);
DatastoreServiceFactoryInternal.setDatastoreService(recordingImpl);
}