Bug 309837 [Workbench] Improve startup performance by fixing the cache for feature ini's
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
if (isDisposed) {
			return;
		}
    	isDisposed = true;
    	IMenuService menuService = (IMenuService) window.getService(IMenuService.class);
        menuService.releaseContributions(coolbarPopupMenuManager);
        coolbarPopupMenuManager.dispose();
        
        getActionBarConfigurer().getStatusLineManager().remove(statusLineItem);
        if (pageListener != null) {
            window.removePageListener(pageListener);
            pageListener = null;
        }
        if (prefListener != null) {
            ResourcesPlugin.getPlugin().getPluginPreferences()
                    .removePropertyChangeListener(prefListener);
            prefListener = null;
        }
        if (propPrefListener != null) {
            WorkbenchPlugin.getDefault().getPreferenceStore()
                    .removePropertyChangeListener(propPrefListener);
            propPrefListener = null;
        }
        if (resourceListener != null) {
            ResourcesPlugin.getWorkspace().removeResourceChangeListener(resourceListener);
            resourceListener = null;
        }
        showInQuickMenu.dispose();
        newQuickMenu.dispose();