{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"//"}]}
        // Enum variants can't be private, we can't modify builtin types
        hir::ModuleDef::Macro(_) => return None,
        hir::ModuleDef::Variant(_) | hir::ModuleDef::BuiltinType(_) => return None,