@Override
  public void actionPerformed(@NotNull AnActionEvent e) {
    final Project project = e.getProject();
    final VirtualFile file = VcsContextUtil.selectedFile(e.getDataContext());
    if (project == null || file == null) return;

    final AbstractVcs vcs = ProjectLevelVcsManager.getInstance(project).getVcsFor(file);
    if (vcs == null) return;

    RevisionSelector selector = vcs.getRevisionSelector();
    DiffProvider diffProvider = vcs.getDiffProvider();
    if (selector == null || diffProvider == null) return;

    VcsRevisionNumber vcsRevisionNumber = selector.selectNumber(file);
    if (vcsRevisionNumber != null) {
      DiffActionExecutor.showDiff(diffProvider, vcsRevisionNumber, file, project);
    }
  }
@Override
  public void actionPerformed(@NotNull AnActionEvent e)