Closing one or more projects triggers initialization (creation) of all non-existing TopComponents that are declared to
be docked in the editor mode. This may take a long time.

The method that triggers this initialization in in file ProjectUtilities.java, in method doClose() (in an anonymous
inner class):


        private void doClose(Project[] projects, boolean notifyUI, Wrapper wr) {
            //
            // ... (preceding non-essential code) ...
            //
            WindowManager wm = WindowManager.getDefault();
            for (Mode mode : wm.getModes()) {
                if (!wm.isEditorMode(mode)) {
                    continue;
                }
                for (TopComponent tc : mode.getTopComponents()) {
                    //                               ^
                    // this triggers the creation ---|
                }
                //...
            }
        }


I understand the motivation for the above code. I also do not know of any other way of writing it better until the
Window System API provides a method like Mode.getExistingTopComponents(). So I assume that the Window System API needs
to be extended to allow such a call.