return new Class[] {IWorkbenchAdapter.class, IPropertySource.class, IDeferredWorkbenchAdapter.class};
return new Class[] {IWorkbenchAdapter.class, IPropertySource.class, IDeferredWorkbenchAdapter.class, IHistoryPageSource.class};
	public Class[] getAdapterList() {		return new Class[] {IWorkbenchAdapter.class, IPropertySource.class, IDeferredWorkbenchAdapter.class};	}