Predicate tokens class(...) bug?

When a class is created using the predicate token class like:

$[name in class(SomeClass)]

It works if SomeClass is a list of glyphs, but not if it’s made with Predicate Tokens.

This is a limitation of tokens currently. class(…) just imports the contents of another class and thus that other class may only contain a list of glyph names.

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