IPersistentRepresentation Update(
	long sequenceNr,
	string persistenceId,
	bool isDeleted,
	IActorRef sender,
	string writerGuid
)

abstract Update : 
        sequenceNr : int64 * 
        persistenceId : string * 
        isDeleted : bool * 
        sender : IActorRef * 
        writerGuid : string -> IPersistentRepresentation