private void notify(@NotNull List<VirtualFile> roots) {
    String message = roots.size() == 1
                     ? message("notification.content.single.root.unsupported.format", roots.get(0).getPresentableName())
                     : message("notification.content.multiple.roots.unsupported.format");

    getApplication().invokeLater(
      () -> {
        if (isDisposed(this)) return;
        new VcsBalloonProblemNotifier(myProject, message, MessageType.WARNING).run();
      },
      ModalityState.nonModal()
    );
  }
private void notify(@NotNull List<VirtualFile> roots)