fElements.add(workingSet);
    void createWorkingSet() {        WorkingSetNewWizard wizard = new WorkingSetNewWizard();        WizardDialog dialog = new WizardDialog(getShell(), wizard);        dialog.create();        WorkbenchHelp.setHelp(dialog.getShell(),                IWorkbenchHelpContextIds.WORKING_SET_NEW_WIZARD);        if (dialog.open() == Window.OK) {            IWorkingSetManager manager = WorkbenchPlugin.getDefault()                    .getWorkingSetManager();            IWorkingSet workingSet = wizard.getSelection();            listViewer.add(workingSet);            listViewer.setSelection(new StructuredSelection(workingSet), true);            manager.addWorkingSet(workingSet);            addedWorkingSets.add(workingSet);        }    }