pub fn extract(html: &[u8]) -> Result<Manifest, Error>Expand description
Locate the document’s single C2PA manifest association and decode it.
Fails with Error::NotFound when there is none, Error::MultipleManifests
when there is more than one, and Error::MalformedElement when the one
element present yields no Manifest Store. All three mean “no manifests
located” to a validator; see Error::is_no_manifest_located.