1using System.Collections.Generic;
 2using Gorilla.Commons.Utility;
 3using MoMoney.Domain.Core;
 4using gorilla.commons.utility;
 5
 6namespace MoMoney.Domain.Accounting
 7{
 8    static public class IncomeExtensions
 9    {
10        static public Money in_the(this IEnumerable<IIncome> income_collected, Year year)
11        {
12            return income_collected.return_value_from_visiting_all_with(new AnnualIncomeVisitor(year));
13        }
14    }
15}