Event handlers for Spin box

I'm trying to understand why the event handlers for a Spinbox are not
being called.

I've looked in the components directory and for some strange reason,
SpinUp and SpinDown are commented out in spinner.py

I didn't see any examples in the Demo  projects that actually show the
event handlers for a Spinbox.

If someone has a few lines of code they could post which shows the
names of the event handlers used
when the up/down arrows are clicked it would be helpful.

I've also gave the "Command' field in the Layout editor the name of an
event handler, but it too isn't being called.


Thanks

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