private final Clock clock = Time.clock();
    private int waitingFor;
    private final WaitPrecondition previous;
    private long mostRecentEvent;
    private boolean cancelled;
    private final ExpectationState state = new ExpectationState();

    ExpectMaxNConcurrentRequests(Lock lock, int testId, Duration timeout, int maxConcurrent, WaitPrecondition previous, Collection<? extends ResourceExpectation> expectedRequests) {