pub fn existence_time_path<'receipt, 'path, 'document, S, Q, I>(
signer: &'receipt S,
path: &'receipt TimestampPath<'_, '_, '_, Q::Id, Q::Document, Q::Generation, I>,
query: &Q,
) -> SignatureTimeResult<'receipt, S, Q, I>where
S: SignerReceipt<'path, 'document, Id = Q::Id, Document = Q::Document, Generation = Q::Generation>,
Q: Query,
'document: 'path,Expand description
Associates an actual checked signature OR archive input with the selected
signer’s static path interval. A format must already have bound that input
to this signature; this does not turn an archive into a signature property.
EN319142-1 §6.3 permits a covering document timestamp to supply PAdES B-T.
Other formats retain their independent signature-property requirements.
https://www.etsi.org/deliver/etsi_EN/319100_319199/31914201/01.02.01_60/en_31914201v010201p.pdf