Values.ChildShardSourceOutput parameter of the GetRecords API. The existing child shard of the current shard.
type nonrec t = {shardId : ShardId.t option;The shard ID of the existing child shard of the current shard.
*)parentShards : ShardIdList.t option;The current shard that is the parent of the existing child shard.
*)hashKeyRange : HashKeyRange.t option;}