private final RuntimeException failure;

    public AbstractFailure(RuntimeException failure) {
        this.failure = failure;
    }

    @Override
    public boolean isFailure() {
        return true;
    }

    @Override
    public RuntimeException getFailure() {
        return failure;
    }

    @Override
    public void writeTo(int requestId, HttpExchange exchange) {

 */

package org.gradle.test.fixtures.server.http;

import com.sun.net.httpserver.HttpExchange;

import java.io.IOException;

interface ResponseProducer {
    default boolean isFailure() {
        return false;
    }

    /**
     * Called to handle a request. Is *not* called under lock.
     */
    void writeTo(int requestId, HttpExchange exchange) throws IOException;

    /**