@Override
  public @NotNull Disposable subscribeToRootRefreshEvents(final @NotNull Collection<? extends VirtualFile> roots, final @NotNull VcsLogRefresher refresher) {
    MessageBusConnection connection = myProject.getMessageBus().connect();
    connection.subscribe(HgVcs.STATUS_TOPIC, new HgUpdater() {
      @Override
      public void update(Project project, @Nullable VirtualFile root) {
        if (root != null && roots.contains(root)) {
          refresher.refresh(root);
        }
      }
    });
    return connection;
  }
@Override
  public @NotNull Disposable subscribeToRootRefreshEvents(final @NotNull Collection<? extends VirtualFile> roots, final @NotNull VcsLogRefresher refresher)