{"ast_node_type":"other","tokens":[{"end":5,"kind":"keyword","start":0,"text":"{"}]}
    {
    ) -> impl DoubleEndedIterator<Item = (&Name, (CrateRootModuleId, Option<ExternCrateId>))> + '_
        self.extern_prelude.iter().map(|(name, &def)| (name, def))