public static AddRaftVoterResponseData addVoterResponse(
        Errors error,
        String errorMessage
    ) {
        errorMessage = errorMessage == null ? error.message() : errorMessage;

        return new AddRaftVoterResponseData()
            .setErrorCode(error.code())
            .setErrorMessage(errorMessage);
    }
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