{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":".flat_map(|super_poly_trait_ref|"}]}
        .flat_map(|super_poly_trait_ref| {
    let mut assoc_preds: Vec<_> = traits::supertraits(tcx, poly_trait_ref)
            tcx.associated_items(super_poly_trait_ref.def_id())