Warns that the Ditto authentication token is getting old.
Ditto will attempt to refresh tokens periodically, starting from halfway through the token's validity period. This reduces the risk of authentication expiring while the user is offline.
The refresh will happen automatically if Ditto has a suitable refresh
token. If new credentials are required, such as a third-party token or a
username/password, then Ditto does not cache that information and you must
submit it again using one of the
login methods on Authenticator.
There is no Ditto authentication token or it has expired. Sync will not work until there is a successful login using one of the login methods on Authenticator.
Notifies the authentication handler that the authentication status did
change. Use the
status to query for the current
This method is optional.
Provides feedback to the developer about Ditto authentication status.