@NotNull
  public static List<JComponent> createCustomNotifications(@Nullable DiffViewer viewer,
                                                           @NotNull DiffContent content) {
    List<DiffNotificationProvider> providers = getNotificationProviders(content);
    return createNotifications(viewer, providers);
  }
@NotNull
  public static List<JComponent> createCustomNotifications(@Nullable DiffViewer viewer,
                                                           @NotNull DiffContent content)