{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"if"}]}
        if !c.has_non_region_infer() { c } else { c.super_fold_with(self) }
    fn fold_clauses(&mut self, c: ty::Clauses<'tcx>) -> ty::Clauses<'tcx> {
    }