{"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"args.extend_from_slice(&gen_args.0);"}]}
        args.extend_from_slice(&gen_args.0);
        let mut args = vec![GenericArgKind::Type(self_ty)];
        TraitRef { def_id, args: GenericArgs(args) }