private boolean disposeSelf() {
    myDisposeInProgress = true;
    final CommandProcessor commandProcessor = CommandProcessor.getInstance();
    final Ref<Boolean> canClose = new Ref<Boolean>(Boolean.TRUE);
    for (final Project project : ProjectManagerEx.getInstanceEx().getOpenProjects()) {
      try {
        commandProcessor.executeCommand(
            project,
            new Runnable() {
              public void run() {
                canClose.set(ProjectUtil.closeAndDispose(project));
              }
            },
            ApplicationBundle.message("command.exit"),
            null);
      } catch (Throwable e) {
        LOG.error(e);
      }
      if (!canClose.get()) {
        myDisposeInProgress = false;
        return false;
      }
    }
    Disposer.dispose(this);

    Disposer.assertIsEmpty();
    return true;
  }
 public <T> T runWriteAction(@NotNull final Computable<T> computation) {
   final Ref<T> ref = Ref.create(null);
   runWriteAction(
       new Runnable() {
         public void run() {
           ref.set(computation.compute());
         }
       });
   return ref.get();
 }