[rules-users] Can I do a Collection contains Collection?

[EdenAEL20]

I have an object coming in which contains a collection of id's. I want to
verify these id's are in another collection. I'm looking for something like
collection is a subset of another collection. any ideas??

zips below is a collection, i want to verify that each zip is in $e1. 

rule "example"
  when
         e1: Set() from RefData.getConstantValues()
         e2: Example( zips not in $e1)
  then
       error()
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