{"ast_node_type":"variable","tokens":[{"end":74,"kind":"keyword","start":0,"text":"let"}]}
    let overridden_methods = tcx.impl_item_implementor_ids(item.owner_id);
    let trait_ref = tcx.normalize_erasing_regions(typing_env, trait_ref);
    for method in tcx.provided_trait_methods(trait_ref.def_id) {