public void addDescriptors(DatabaseSession session) {
   Vector descriptors = new Vector();
   descriptors.addElement(LockInCache.descriptor());
   descriptors.addElement(LockInObject.descriptor());
   descriptors.addElement(TimestampInCache.descriptor());
   descriptors.addElement(TimestampInObject.descriptor());
   descriptors.addElement(TimestampVersion.descriptor());
   descriptors.addElement(TimestampInAggregateObject.descriptor());
   //
   descriptors.addElement(ObjectVersion.descriptor());
   descriptors.addElement(LockInAggregateObject.descriptor());
   //
   descriptors.addElement(ChangedRow.descriptor());
   (session).addDescriptors(descriptors);
   (session).addDescriptors(new RockBandProject());
   (session).addDescriptors(new AnimalProject());
 }