I'm using the mocking network for testing a scheduled flow, but I can't track the result given because it isn't returned as a future like using `node.services.startFlow(...)` . 

I've already tried the approach stated in the heartbeat example:

```
val recordedTxs = node.database.transaction {
  val (recordedTxs, futureTxs) = node.services.validatedTransactions.track()
  futureTxs.notUsed()
  recordedTxs
}

```

I've listed the content inside `recordedTxs`, and the one loaded by the scheduled flow doesn't appear. I've also subscribed to `futureTxs` but there are no updates of the observable. 

Are there other ways?

Thanks