OAE.tenantRouter.on('post', '/api/folder/:folderId/share', (request, response) => {
  const viewers = OaeUtil.toArray(request.body.viewers);
  FoldersAPI.shareFolder(request.ctx, request.params.folderId, viewers, (error) => {
    if (error) {
      return response.status(error.code).send(error.msg);