Thread.currentThread().dumpStack();
    private ChangeTrainMove(int id, TrainModel before, TrainModel	    after, FreerailsPrincipal p) {	super(KEY.TRAINS, id, before, after, p);	System.out.println("creating ChangeTrainMove for train " + id + ": " +		getBefore() + ", " + ", " + getAfter());	Thread.currentThread().dumpStack();    }