{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"self.tcx.type_of(field.did).instantiate_identity().visit_with(self)"}]}
                    self.tcx.type_of(field.did).instantiate_identity().visit_with(self)
                self.tcx.adt_def(def_id).all_fields().try_for_each(|field| {
                })