}
    return params;
  }

  private static final ImmutableSet<String> NOT_WORKING_ON_MOCKS =
      ImmutableSet.of("latestPermitAgeSec", "setRate", "getAvailablePermits");

  // We would use ArbitraryInstances, but it returns 0, invalid for many RateLimiter methods.
  private static final ImmutableClassToInstanceMap<Object> PARAMETER_VALUES =
      ImmutableClassToInstanceMap.builder()

    }
    return params;
  }

  private static final ImmutableSet<String> NOT_WORKING_ON_MOCKS =
      ImmutableSet.of("latestPermitAgeSec", "setRate", "getAvailablePermits");

  // We would use ArbitraryInstances, but it returns 0, invalid for many RateLimiter methods.
  private static final ImmutableClassToInstanceMap<Object> PARAMETER_VALUES =
      ImmutableClassToInstanceMap.builder()