{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"#[derive(PartialEq,"}]}
        #[derive(PartialEq, Eq, PartialOrd, Ord)]
        // they appear in the file, so for local items, we sort by node_id first
        struct ItemSortKey<'tcx>(Option<usize>, SymbolName<'tcx>);