Bug 243758 [Contributions] Accelerators in menus are not installed until menu shown
bundles/org.eclipse.jface/src/org/eclipse/jface/window/ApplicationWindow.java
*   to not show it
     * @since 3.0
     */
    protected boolean showTopSeperator() {
        return !Util.isMac();
    }
    /**
     * Create the status line if required.
     * @param shell
     */
    protected void createStatusLine(Shell shell) {
        if (statusLineManager != null) {
            statusLineManager.createControl(shell, SWT.NONE);
        }
    }
    /**
     * Returns a new menu manager for the window.
     * <p>
     * Subclasses may override this method to customize the menu manager.
     * </p>
     * @return a menu manager
     */
    protected MenuManager createMenuManager() {
        return new MenuManager();
    }
    /**
     * Returns a new status line manager for the window.
     * <p>
     * Subclasses may override this method to customize the status line manager.
     * </p>