organizer.removeChildren(experiment);
  private void runExperimentBuilderWorker(Experiment experiment,                                          boolean alwaysNew) {    Class[] paramClasses = { CSMART.class, Experiment.class };    Object[] params = new Object[2];    params[0] = this;    params[1] = experiment;    createTool(EXPERIMENT_BUILDER, ExperimentBuilder.class, 	       alwaysNew, experiment.getExperimentName(), experiment,	       paramClasses, params);  }