int taxModifier = 0;
Iterator propertyEditor = getPropertiesIterator();
while (propertyEditor.hasNext()) {
Property property = (Property) propertyEditor.next();
if (property instanceof ModifyTaxIncome) {
ModifyTaxIncome increaseTaxIncome = (ModifyTaxIncome) property;
taxModifier = taxModifier + increaseTaxIncome.getModifier();
}
}
return taxModifier;
}