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I’m at a loss on this one…
Looking at a Set in Scala collections, I see that there is a method called subsetOf. But when I try to find where it is in the actual .scala source code (I’ve looked in Set.scala, GenSet.scala, SetLike.scala etc…) I can’t find it!!!
Which trait actually defines that method? Or am I missing something?
If you click on function in scaladoc, you may see where is it defined: