return factory.getName()
                  + "("
                  + Joiner.on(", ").useForNull("null").join(factoryArgs)
                  + ")";
            });
    tester.addEqualityGroup(instance, createInstance(factory, equalArgs));
    for (int i = 0; i < params.size(); i++) {
      List<Object> newArgs = new ArrayList<>(args);

    FreshValueGenerator generator = new FreshValueGenerator();
    EqualsTester tester = new EqualsTester();
    for (int i = 0; i < instances; i++) {
      tester.addEqualityGroup(generator.generateFresh(type));
    }
    tester.testEquals();
  }

  private static <T> void assertEqualInstance(Class<T> type, T value) {
    FreshValueGenerator generator = new FreshValueGenerator();

    FreshValueGenerator generator = new FreshValueGenerator();
    EqualsTester tester = new EqualsTester();
    for (int i = 0; i < instances; i++) {
      tester.addEqualityGroup(generator.generateFresh(type));
    }
    tester.testEquals();
  }

  private static <T> void assertEqualInstance(Class<T> type, T value) {
    FreshValueGenerator generator = new FreshValueGenerator();