class TransactionRateLimitingCallback implements OperationCallback {

    @Override
    public void success() {
        Preconditions.checkState(state != State.STOPPED, "state is STOPPED");
        pause();
        commitTimer.update(elapsedTime, TimeUnit.NANOSECONDS);
        state = State.STOPPED;
    }

      TransactionRateLimitingCallback(ActorUtils actorUtils);

}