TaskProxy.play : why TaskProxy's clock is ignored?

I’ll do it with Pbinddef here, a subclass of TaskProxy

Pbindef(\test,\note,Pseq((0..10)),\dur,1)
Pbindef(\test).clock = TempoClock(10)
Pbindef(\test).trace.play
// it still plays at default tempo = 1

Looking at TaskProxy’s source, I see that its own clock is completely ignored in its .play method, favoring only argClock.

Is this a “bug” or is there any reason? Thanks!!

hjh