public IActionResult Search(int areaID, string keyword, int pageIndex, int pageSize)
        {
            string[] fields = new[] { "name" };           //, "desc"

            Occur[] flags = new Occur[] { Occur.SHOULD }; //, Occur.SHOULD

            Sort sort = new Sort(new SortField("updatetime", SortField.STRING, true));

            int count = 0;

            var list = SearchHelper.AreaSearch(Location.OperatorArea, keyword, fields, flags, sort, pageIndex, pageSize, out count);

            return(Success(new
            {
                Count = count,
                Data = list
            }));
        }