@Nls
  @NotNull
  protected String getChangesBetweenRevisionsDialogTitle(@NotNull final FilePath path, @NotNull final T rev1, @Nullable final T rev2) {
    String rev1Title = getPresentableName(rev1);
    if (rev2 == null) {
      return VcsBundle.message("file.history.diff.handler.paths.diff.with.local.title", rev1Title, path.getName());
    }

    String rev2Title = getPresentableName(rev2);
    return VcsBundle.message("file.history.diff.handler.paths.diff.title", rev1Title, rev2Title, path.getName());
  }
@Nls
  @NotNull
  protected String getChangesBetweenRevisionsDialogTitle(@NotNull final FilePath path, @NotNull final T rev1, @Nullable final T rev2)