code: @XmlElementDecl(namespace = "http://schema.intuit.com/finance/v3", name = "Invoice", substitutionHeadNamespace = "http://schema.intuit.com/finance/v3", substitutionHeadName = "IntuitObject")
      public JAXBElement<Invoice> createInvoice(Invoice value) {
          return new JAXBElement<Invoice>(_Invoice_QNAME, Invoice.class, null, value);
      }
docs: Create an instance of {@link JAXBElement }{@code <}{@link Invoice }{@code >}}