Authoritative-server transition. A stale optimistic command is rejected; transformation/rebase policy can be layered above this strict primitive.
The current immutable session snapshot.
The request value (PageOperationRequest).
The next immutable snapshot and the corresponding sequenced event.
PageProtocolError when the request is malformed or stale.
Authoritative-server transition. A stale optimistic command is rejected; transformation/rebase policy can be layered above this strict primitive.