Hi,

having a stream with many Flow components often makes you wondering where 
all the time is being spent.

Any idea how to end up with something like a HashMap with entries 
[flowName/flowType, msSum] ?

I can think of either a profiling function being explicitly passed to all 
Flow combinators that do some work like map/mapAsync

Or implementing a PushPullStage that would be appended via "transform()" 
after each Flow - but I'm not sure at all if summing times between 
individual pushes would be a sensible and correct result - imho it 
wouldn't...

Is there a better way to do this ?

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