Resend
@Serializable
@SerialName(value = "resend")
Gap retransmission request: requester has detected that it is missing deltas from sender in the range [fromSeq..toSeq] inclusive. sender should re-broadcast each buffered delta in that range.
class Resend<S>(val requester: ReplicaId, val sender: ReplicaId, val fromSeq: Long, val toSeq: Long) : QuiltMessage<S>