public static IEnumerable <EmployeeDTO> SearchEmployeesDTOs(List <ParamEmployeeId> paramEmployeeIds)
        {
            var listEmployee = LoadEmployees();
            var listDTO      = from emp in listEmployee
                               where EmployeeUtils.BelongsToIds(emp, paramEmployeeIds)
                               select ContractFactory.BuildContract(emp).GenerateDTO();

            return(listDTO);
        }