{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"self_ty_where_predicates:"}]}
    self_ty_where_predicates: Option<(LocalDefId, &'tcx [hir::WherePredicate<'tcx>])>,
    hir_bounds: &'tcx [hir::GenericBound<'tcx>],
    span: Span,