/// Loads all the changesets that have been stored as one giant changeset.
///
- /// This function returns a tuple of the aggregate changeset and a result that indicates
- /// whether an error occurred while reading or deserializing one of the entries. If so the
- /// changeset will consist of all of those it was able to read.
+ /// This function returns the aggregate changeset, or `None` if nothing was persisted.
+ /// If reading or deserializing any of the entries fails, an error is returned that
+ /// consists of all those it was able to read.
///
/// You should usually check the error. In many applications, it may make sense to do a full
/// wallet scan with a stop-gap after getting an error, since it is likely that one of the