{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"builtin_attrs:"}]}
    builtin_attrs: Vec<(Ident, ParentScope<'ra>)>,
        Vec<(Vec<Segment>, Span, MacroKind, ParentScope<'ra>, Option<Res>, Namespace)>,
    /// `derive(Copy)` marks items they are applied to so they are treated specially later.