Issued Document Handle
class IssuedDocumentHandle
High–level stable representation of a stored credential/document.
Backed by EUDI IssuedDocument, but exposes only stable and safe-to-use properties for apps:
document id
display name / issuer name
SD-JWT VC payload
signing using holder key
More structured parsing (e.g. credentialSubject.name) is handled at the app layer or via helpers such as vcValue.