markPaid method
Marks the invoice fully paid, without an online payment.
Implementation
void markPaid(UDormBedInvoiceResponse i) => confirmAction(
() => UServices.hotel.payDormBedInvoice(p: UIdParams(id: i.id)),
read,
title: U.s.payInvoice,
message: U.s.markThisInvoiceAsFullyPaid,
);