void save() {
checkEditViewSet();
if (bill == null) bill = new Bill();
bill = editView.fillBill(bill);
bill.setInitDate(initDate);
bill.setEndDate(endDate);
OperationResult result = repository.save(bill);
if (result.isValid()) {
editView.finishView();
} else {
for (ValidationError validationError : result.getErrors())
editView.showError(validationError);
}
}
