How does one create/schedule a custom IQuartzQuantizedCommand such as a scheduled AC stop (or any other commands on an FQuartzTickableObject instance?)
From what I can tell, there is no way to quartz schedule an AudioComponent without subclassing it (and potentially the ClockHandle and Quartz too). Even the delayed stop function is a bit a of a hack (long fade).
I traced how PlayQuantized works and here is what I found out: UAudioComponent::PlayQuantized() creates an AudioComponentQuartzCommandData which is queued up by the clock handle InClockHandle->QueueQuantizedSound() (public).
The ClockHandle then creates a Audio::FQuantizedQueueCommand/FQuantizedPlayCommand command pointer and use UQuartzSubsystem::CreateRequestDataForSchedulePlaySound. (Now Quartz has a deprecated AddCommandToClock method which might have been what to use to implement a scheduled stop, but the deprecation message says: Obtain and use a UQuartzClockHandle / FQuartzClockProxy instead)
Then once the clock says it’s time, it triggers the following chain of events. UAudioComponent::PlayQueuedQuantizedInternal (public) which creates a PlayInternalRequestData which is sent to PlayInternal (protected) which creates an FActiveSound with the scheduled data, which is finally added to the audio device new active sounds via: AudioDevice->AddNewActiveSound
I was hoping I could create a FQuantizedStopCommand (IQuartzQuantizedCommand) and then schedule it directly on the clock. But the clock doesn’t seem to support that anymore:
UE_DEPRECATED(5.1, "This function should not be called directly, and the original functionality has been moved into FQuartzTickable")
virtual void ProcessCommand(const Audio::FQuartzQuantizedCommandDelegateData& Data) override {}
Now the clock handle is QuartzTickable object and offers a few methods that seem to be related, but I’m getting lost in the indirection and I haven’t even gotten to the part where I implement the Stop command on the AudioComponent 
Any pointers/help would be greatly appreciated.
