}

    void checkAndUpdateStatus(Status oldStatus, Status newStatus) {
      checkState(
          compareAndUpdateStatus(oldStatus, newStatus),
          "Expected status to be %s, but it was %s",
          oldStatus,
          newStatus);
    }

    boolean compareAndUpdateStatus(Status oldStatus, Status newStatus) {
      return status.compareAndSet(oldStatus, newStatus);
    }