public WebResponseContentModel <List <EmployeeSimpleModel> > GetAllEmployeeSupervisors()
        {
            WebResponseContentModel <List <EmployeeSimpleModel> > dt = new WebResponseContentModel <List <EmployeeSimpleModel> >();

            try
            {
                dt = GetResponseFromWebRequest <WebResponseContentModel <List <EmployeeSimpleModel> > >(WebServiceHelper.GetAllEmployeeSupervisors(), "get");
            }
            catch (Exception ex)
            {
                dt.ValidationErrorAppSide = ConcatenateExceptionMessage(ex);
            }

            return(dt);
        }