public static IEnumerable <ResultPack> EvaluateConcept(ConfigBase evalConfig, Period evalPeriod, IPeriodProfile evalProfile,
                                                               Result <MasterItem.EvaluateSource, string> prepValues)
        {
            IEmployProfile conceptProfile = evalProfile.Employ();

            if (conceptProfile == null)
            {
                return(EvaluateUtils.DecoratedError(CONCEPT_DESCRIPTION_ERROR_FORMAT, CONCEPT_PROFILE_NULL_TEXT));
            }

            MasterItem.EvaluateSource conceptValues = prepValues.Value;
            // EVALUATION
            TAmountDec salaryPaymentValue = conceptProfile.SalaryAmountScheduleWork(evalPeriod,
                                                                                    conceptValues.MonthlyAmount,
                                                                                    conceptValues.HoursLiable,
                                                                                    conceptValues.HoursWorked);
            // EVALUATION

            IArticleResult conceptResult = new ArticleGeneralResult(evalConfig);

            // SET RESULT VALUES
            conceptResult.AddMoneyPaymentValue(salaryPaymentValue);
            // SET RESULT VALUES

            return(EvaluateUtils.Results(conceptResult));
        }