Module complement 

Functions for attaching SEFAZ authorization protocols to signed XML documents. Functions for attaching SEFAZ authorization protocols to signed XML documents.

Each submodule handles one type of protocol attachment:

• [protocol] — NFe authorization (<nfeProc>)
• [inutilizacao] — Number voiding (<ProcInutNFe>)
• [event] — Event protocol (<procEventoNFe>)
• [b2b] — B2B financial wrapper (<nfeProcB2B>)
• [cancellation] — Cancellation event attachment
• [helpers] — Internal XML parsing utilities

Functions

attach_b2b

Attach a B2B financial tag to an authorized <nfeProc> XML, wrapping both in a <nfeProcB2B> element.

attach_cancellation

Attach a cancellation event response to an authorized <nfeProc> XML, marking the NF-e as locally cancelled.

attach_event_protocol

Attach an event protocol response to the event request, producing the <procEventoNFe> wrapper.

attach_inutilizacao

Attach the SEFAZ inutilizacao response to the request, producing the <ProcInutNFe> wrapper.

attach_protocol

Attach the SEFAZ authorization protocol to a signed NFe XML, producing the <nfeProc> wrapper required for storage and DANFE.

to_authorize

Detect the document type from raw XML and dispatch to the correct protocol-attachment function.