{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"potential_assoc_types:"}]}
        potential_assoc_types: Vec<usize>,
        missing_assoc_types: FxIndexSet<(DefId, ty::PolyTraitRef<'tcx>)>,
        trait_bounds: &[hir::PolyTraitRef<'_>],