{"ast_node_type":"function","tokens":[{"end":92,"kind":"keyword","start":0,"text":".expect(\"early-bound"}]}
                                .expect("early-bound var should be present in fn generics"),
                                .param_def_id_to_index(self, ebv.to_def_id())
                            name: self.item_name(ebv.to_def_id()),