{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"predicate_self_type_to_point_at:"}]}
        predicate_self_type_to_point_at: Option<ty::GenericArg<'tcx>>,
        expr: &'tcx hir::Expr<'tcx>,
        param_to_point_at: Option<ty::GenericArg<'tcx>>,