public async Task <ActionResult> GetUsersByCompanyId(int companyId)
        {
            IEnumerable <SYS_CompanyUser> result = null;

            using (var client = new UserAccountClient())
            {
                var serviceResult = await client.GetCompanyUsersByCompanyIdAsync(companyId);

                serviceResult.ThrowIfException(true);
                result = serviceResult.Result;
            }

            return(Json(result, JsonRequestBehavior.AllowGet));
        }