message: Enable all proposed features
diff: @@ -50,8 +50,8 @@ export function activate(context: ExtensionContext) {
  };
  client = new LanguageClient('testbed', 'Testbed', serverOptions, clientOptions);
  - client.registerFeature(ProposedFeatures.createNotebookDocumentSyncFeature(client));
  - // client.registerProposedFeatures();
  + // client.registerFeature(ProposedFeatures.createNotebookDocumentSyncFeature(client));
  + client.registerProposedFeatures();
  // let not: NotificationType<string[], void> = new NotificationType<string[], void>('testbed/notification');
  void client.onReady().then(() => {
  return client.sendNotification('testbed/notification', ['dirk', 'baeumer']);
  