{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"alt_self_params[pointee_param_idx]"}]}
    alt_self_params[pointee_param_idx] = GenericArg::Type(s_ty.clone());
    let mut alt_self_params = self_params;
    let alt_self_type = cx.ty_path(cx.path_all(span, false, vec![name_ident], alt_self_params));