{"ast_node_type":"other","tokens":[{"end":93,"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)?;
                    for field in def.all_fields() {
                    }