public static Optional<ReplicaKey> removeVoterRequestVoterKey(RemoveRaftVoterRequestData request) {
        if (request.voterId() < 0) {
            return Optional.empty();
        } else {
            return Optional.of(ReplicaKey.of(request.voterId(), request.voterDirectoryId()));
        }
    }
Creates a FetchSnapshotResponseData with a single PartitionSnapshot for the topic partition.

The partition index will already be populated when calling operator.

@param listenerName the listener used to accept the request
@param apiVersion the api version of the request
@param topicPartition the topic partition to include
@param leaderId the id of the leader
@param endpoints the endpoints of the leader
@param operator unary operator responsible for populating all of the appropriate fields
@return the created fetch snapshot response data
raft/src/main/java/org/apache/kafka/raft/RaftUtil.java