{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"try_visit!(self.def_id_visitor.visit_def_id(def_id,"}]}
                    try_visit!(self.def_id_visitor.visit_def_id(def_id, "trait", &trait_ref));
                    let ty::ExistentialTraitRef { def_id, .. } = trait_ref;
                }