@NotNull
  private Notification notify(@NotNull NotificationGroup notificationGroup,
                              @NonNls @Nullable String displayId,
                              @NotificationTitle @NotNull String title,
                              @NotificationContent @NotNull String message,
                              @NotNull NotificationType type,
                              NotificationAction... actions) {
    Notification notification = createNotification(notificationGroup, displayId, title, message, type, null);
    for (NotificationAction action : actions) {
      notification.addAction(action);
    }
    return notify(notification);
  }
@NotNull
  private Notification notify(@NotNull NotificationGroup notificationGroup,
                              @NonNls @Nullable String displayId,
                              @NotificationTitle @NotNull String title,
                              @NotificationContent @NotNull String message,
                              @NotNull NotificationType type,
                              NotificationAction... actions)