@Override
  public void showDiffForTwo(@NotNull Project project,
                             @NotNull FilePath filePath,
                             @NotNull VcsFileRevision older,
                             @NotNull VcsFileRevision newer) {
    doShowDiff(filePath, older, newer);
  }
@Override
  public void showDiffForTwo(@NotNull Project project,
                             @NotNull FilePath filePath,
                             @NotNull VcsFileRevision older,
                             @NotNull VcsFileRevision newer)