{"ast_node_type":"other","tokens":[{"end":22,"kind":"keyword","start":0,"text":"//"}]}
    // with "hir only"
    // So, the logic here is getting same result as "hir lowering + match with lowered thir"
    fn is_known_valid_scrutinee(&self, scrutinee_expr: ExprId, db: &dyn HirDatabase) -> bool {