{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"//"}]}
                // FIXME(jdonszelmann): avoid the into_iter/collect?
            allow_internal_unstable: (!allow_internal_unstable.is_empty())
                .then(|| allow_internal_unstable.iter().map(|i| i.0).collect::<Vec<_>>().into()),