{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"fields.get(FieldIdx::from_u32(idx)).unwrap_or(&Value::Uninit)"}]}
                        fields.get(FieldIdx::from_u32(idx)).unwrap_or(&Value::Uninit)
                    if idx <= FieldIdx::MAX_AS_U32 {
                    } else {