assertFalse(monitor.isOccupiedByCurrentThread());
    monitor.enter();
    try {
      assertTrue(monitor.isOccupiedByCurrentThread());

      doWaitScenarioSetUp();

      boolean interruptedBeforeCall = Thread.currentThread().isInterrupted();
      Outcome actualOutcome = doCall();
      boolean occupiedAfterCall = monitor.isOccupiedByCurrentThread();

    assertFalse(monitor.isOccupiedByCurrentThread());
    monitor.enter();
    try {
      assertTrue(monitor.isOccupiedByCurrentThread());

      doWaitScenarioSetUp();

      boolean interruptedBeforeCall = Thread.currentThread().isInterrupted();
      Outcome actualOutcome = doCall();
      boolean occupiedAfterCall = monitor.isOccupiedByCurrentThread();

            }
          });
    }

    /** Attempts to execute all the listeners in {@link #listeners}. */
    void dispatchListenerEvents() {
      checkState(
          !monitor.isOccupiedByCurrentThread(),
          "It is incorrect to execute listeners with the monitor held.");
      listeners.dispatch();
    }

    @GuardedBy("monitor")
    void checkHealthy() {

            }
          });
    }

    /** Attempts to execute all the listeners in {@link #listeners}. */
    void dispatchListenerEvents() {
      checkState(
          !monitor.isOccupiedByCurrentThread(),
          "It is incorrect to execute listeners with the monitor held.");
      listeners.dispatch();
    }

    @GuardedBy("monitor")
    void checkHealthy() {