public static List <IncomeSource> GetIncomeSources(long accountId = 0)
        {
            if (IncomeSources == null || !IncomeSources.Any())
            {
                IncomeSources = IncomeSourceRepository.GetAllIncomeSources();
            }

            return(IncomeSources);
        }
        public static void AddIncomeSource(string name)
        {
            if (IncomeSources.Any(c => c.Name == name))
            {
                return;
            }

            IncomeSourceRepository.CreateIncomeSource(name);
            IncomeSources = IncomeSourceRepository.GetAllIncomeSources();
        }
 static IncomeSourceHelper()
 {
     IncomeSources = IncomeSourceRepository.GetAllIncomeSources();
 }