#include <qrinvoice/model/qr_invoice.hpp>
qrinvoice::model::qr_invoice::builder qr_invoice_builder;
// ...
qr_invoice_builder.ultimate_debtor()
.structured_address()
.name("Pia-Maria Rutschmann-Schnyder")
.street_name("Grosse Marktgasse")
.house_number("28")
.postal_code("9400")
.city("Rorschach")
.country("CH");
// ...
const qrinvoice::model::qr_invoice qr_invoice = qr_invoice_builder.build();