System.out.println("Removed node: " + nc.getShortName());
  public void removeNode(NodeComponent nc) {    System.out.println("Removed node: " + nc.getShortName());    ExperimentNode sc = (ExperimentNode) nc;    nodes.remove(nc);    sc.dispose();           // Let the node disassociate itself from agents    sc.removeModificationListener(this);    fireModification();  }