{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"var_def_kind:"}]}
                var_def_kind: tcx.def_descr(var_def_id),
                var_name: cx.tcx().item_name(var_def_id),
                var_defined_here_label: tcx.def_ident_span(var_def_id).unwrap(),