{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"p.print_alloc_ids"}]}
                        p.print_alloc_ids = true;
                        let mut p = FmtPrinter::new(tcx, Namespace::ValueNS);
                        p.print_value_path(variant_def.def_id, args)?;