*         .call(
   *             () ->
   *                 new UsageHistory(
   *                     username,
   *                     Futures.getDone(loginDateFuture),
   *                     Futures.getDone(recentCommandsFuture)),
   *             executor);
   * }</pre>
   *
   * @since 20.0
   */
  @GwtCompatible

              return function.apply(
                  closer,
                  peeker.getDone(future1),
                  peeker.getDone(future2),
                  peeker.getDone(future3),
                  peeker.getDone(future4),
                  peeker.getDone(future5));
            }

            @Override
            public String toString() {