pub fn write_back(session: &mut Session) -> Result<(), Error>Expand description
Put the session’s content file back into its container, and count it.
Unrecognised members survive, which Repack already guarantees and SPEC 3
requires. The content file keeps the name the session recorded, so a
container whose content.file says one thing does not quietly acquire
another.
§Errors
See Error. In every variant the original container is untouched.