private FinancialSituationAggregate(FinancialSituationBuilder builder) { Incomings incomings = new Incomings(builder.salary, builder.otherIncome); Outgoings outgoings = new Outgoings(builder.rent, builder.costOfLiving); this.rootEntity = new FinancialSituationRootEntity(builder.applicationNumber, incomings, outgoings); }