{"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"entries:"}]}
    entries: Option<ThinArc<(), Attr>>,
    // FIXME: This can become `Box<[Attr]>` if https://internals.rust-lang.org/t/layout-of-dst-box/21728?u=chrefr is accepted.
}