return store.fetchInfo().exists();
if (store != null) return store.fetchInfo().exists();
	public boolean test(final Object receiver, final String property, final Object[] arguments, final Object expected) {		if (PROPERTY_NAME.equals(property)) {			if (receiver instanceof IAdaptable) {				final IAdaptable adaptable= (IAdaptable) receiver;				final IResource resource= (IResource) adaptable.getAdapter(IResource.class);				if (resource instanceof IProject) {					final IProject project= (IProject) resource;					final IFileStore store= getHistoryStore(project);					return store.fetchInfo().exists();				}			}		}		return false;	}