The archived bytes of one of a record's source documents, checked. Picks the
first document with archived bytes, or the first with role. Throws
OpenKaValidationError for a role no record can have, OpenKaError when there
is no such record or no such archived document, and StoreError — the corpus
is damaged — when the bytes are missing or no longer hash to their name.
The archived bytes of one of a record's source documents, checked. Picks the first document with archived bytes, or the first with
role. ThrowsOpenKaValidationErrorfor a role no record can have,OpenKaErrorwhen there is no such record or no such archived document, andStoreError— the corpus is damaged — when the bytes are missing or no longer hash to their name.