* SES.schedule is called. Therefore Fire.run has to check for null. However, it should be visible
   * if Fire.run is called by delegate.addListener since addListener is called after the assignment
   * to timer, and importantly this is the main situation in which we need to be able to see the
   * write.
   *
   * 2. visibility of the writes to an afterDone() call triggered by cancel():
   *

      throwable = t;
    }

    if (throwable == null) {
      /*
       * The cast is safe: There was no exception, so the assignment from getDone must have
       * succeeded.
       */
      set(uncheckedCastNullableTToT(sourceResult));
      return;
    }

    if (!isInstanceOfThrowableClass(throwable, localExceptionType)) {

If it was in a type annotation we could have used the vertical bar, as:

```Python
some_variable: PlaneItem | CarItem
```

But if we put that in the assignment `response_model=PlaneItem | CarItem` we would get an error, because Python would try to perform an **invalid operation** between `PlaneItem` and `CarItem` instead of interpreting that as a type annotation.

## List of models