{"ast_node_type":"variable","tokens":[{"end":27,"kind":"keyword","start":0,"text":"let"}]}
        let tcx = self.tcx;
    fn visit_variant_data(&mut self, def: &'tcx hir::VariantData<'tcx>) {
        let unconditionally_treat_fields_as_live = self.repr_unconditionally_treats_fields_as_live;