@Override
  public void update(@NotNull AnActionEvent e) {
    Project project = e.getProject();
    VcsLogCommitSelection selection = e.getData(VcsLogDataKeys.VCS_LOG_COMMIT_SELECTION);
    if (project == null || selection == null) {
      e.getPresentation().setEnabledAndVisible(false);
      return;
    }

    MultiMap<Repo, Hash> grouped = groupFirstPackOfCommits(project, selection);
    if (grouped == null) {
      e.getPresentation().setEnabledAndVisible(false);
    }
    else {
      e.getPresentation().setVisible(isVisible(project, grouped));
      e.getPresentation().setEnabled(!grouped.isEmpty() && isEnabled(grouped));
    }
  }
@Override
  public void update(@NotNull AnActionEvent e)