{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//"}]}
                    // This index can be used with `generic_args` since `parent_count == 0`.
                ObjectLifetimeDefault::Param(param_def_id) => {
                    let index = generics.param_def_id_to_index[&param_def_id] as usize;