As described from this posting in Railo Google Groups
ColdFusion
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README.md
index.cfm
my_worker.cfc
output.html
utilities.cfc

README.md

railo4-test-this-scope

To try it, simply run index.cfm within a Railo 4 context.

Also, test it within ColdFusion 10.

I've yet to test this specific code in CF10 but it is my understanding that it wouldn't fail as this does.