Provid a method that calls an event.

We should be able to reUse an event in our regular tests.

Having a method called:

PhasedTestManager.CallEvent(Object extends NonInterruptiveEvent)

Will run the event, and wait until it is finished

Locate PhasedTestManager and NonInterruptiveEvent in the repository, then read how events are currently executed and awaited. Check the regular tests mentioned in the issue for existing event usage. Done means the requested CallEvent method runs the supplied event and returns only after it finishes, with tests covering that behavior.

Written by the indexing model from the issue text.