Island-Windows: How to cancel a running Task?

Elements
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1

I am looking for CancellationToken class, but it is not available on Island platform?

2

Thanks, logged as bugs://82905

3

Until it is available, any alternative solution?

I do see there is ICancellationToken under EUnit.fx, though

4

All cancelation token does is notify something else that it should cancel, so really any object with a safe boolean value will do.