private final Clock clock = Time.clock();
    private final Lock lock;
    private WaitPrecondition last;
    private boolean completed;
    private final Condition condition;
    private int requestsStarted;

    ChainingHttpHandler(Lock lock, int timeoutMs, AtomicInteger counter, WaitPrecondition first) {
        this.lock = lock;
        this.condition = lock.newCondition();
        this.timeoutMs = timeoutMs;

    private final byte[] content;
    private final Lock lock;
    private final Duration timeout;
    private final Condition condition;
    private final WaitPrecondition precondition;
    private boolean requestStarted;
    private boolean released;
    private final Clock clock = Time.clock();
    private long mostRecentEvent;
    private AssertionError failure;