resolve abstract method
Resolves the conflict between the local and the remote version of a
Document.
This method will be invoked when the Replicator finds a newer server-side revision of a document that also has local changes. The local and remote changes must be resolved before the document can be pushed to the server.
Unlike a ReplicationFilter, it does not need to return quickly. If it needs to prompt for user input, that's OK.
Inside of conflict this method receives the id of the conflicted
document, the local revision of the document in the database, or null if
the local document has been deleted and the the remote revision of the
document found on the server or null if the document has been deleted on
the server.
Return the resolved document to save locally (and push, if the replicator
is pushing.) This can be the same as Conflict.localDocument or
Conflict.remoteDocument, or you can create a mutable copy of either one
and modify it appropriately. Alternatively return null if the resolution
is to delete the document.
Implementation
FutureOr<Document?> resolve(Conflict conflict);