public void store() {
   Test.deleteAllInstances(new Atom());
   Test.deleteAllInstances(this);
   CascadeToExistingVectorMember cev = new CascadeToExistingVectorMember();
   cev.vec = new Vector();
   Atom atom = new Atom("one");
   Test.store(atom);
   cev.vec.addElement(atom);
   Test.store(cev);
 }