How to use

RefundAdjInvoiceItem

in

com.ning.billing.invoice.model

                                                 fixedItem.getStartDate(), creditAdjInvoiceItem.getAmount().negate(),
                                                 fixedItem.getCurrency());
final RefundAdjInvoiceItem refundAdjInvoiceItem = new RefundAdjInvoiceItem(fixedItem.getInvoiceId(), fixedItem.getAccountId(),
                                      fixedItem.getStartDate(), BigDecimal.ONE.negate(), fixedItem.getCurrency());
final DefaultInvoice invoice = new DefaultInvoice(fixedItem.getInvoiceId(), fixedItem.getAccountId(), null,

  break;
case REFUND_ADJ:
  item = new RefundAdjInvoiceItem(id, createdDate, invoiceId, accountId, startDate, amount, currency);
  break;
case REPAIR_ADJ: