private void setTitle(@Nullable @NlsContexts.DialogTitle String title) {
    if (getContextUserData(DiffUserDataKeys.DO_NOT_CHANGE_WINDOW_TITLE) == Boolean.TRUE) return;
    if (title == null) title = DiffBundle.message("diff.files.dialog.title");
    setWindowTitle(title);
  }
private void setTitle(@Nullable @NlsContexts.DialogTitle String title)