{"ast_node_type":"other","tokens":[{"end":104,"kind":"keyword","start":0,"text":"//"}]}
        // Whether empty patterns are counted as useful or not. We only warn an empty arm unreachable if
            self.is_scrutinee && matches!(ctors_for_ty, ConstructorSet::NoConstructors);
        // it is guaranteed unreachable by the opsem (i.e. if the place is `known_valid`).