{"ast_node_type":"variable","tokens":[{"end":81,"kind":"keyword","start":0,"text":"if"}]}
                                if let Some(hir::Node::TraitItem(hir::TraitItem {
                                    .map(|def_id| self.tcx.hir_node_by_def_id(def_id));
                                    kind: hir::TraitItemKind::Fn(fn_sig, method),