Reports whether senderId has offered this device a bundle for scope,
and if so where to fetch it.
null means no announcement has been recorded. It does not mean none was
sent: the announcement arrives as a to-device event, so it exists for this
device only once a sync carrying it has been fed through
receiveSyncChanges. A product that expects a bundle and gets
null should sync and ask again rather than treat it as a refusal.
Reports whether
senderIdhas offered this device a bundle forscope, and if so where to fetch it.nullmeans no announcement has been recorded. It does not mean none was sent: the announcement arrives as a to-device event, so it exists for this device only once a sync carrying it has been fed through receiveSyncChanges. A product that expects a bundle and getsnullshould sync and ask again rather than treat it as a refusal.