public static FactoryMethodDoesNotAcceptNull create(String name) {
      return new FactoryMethodDoesNotAcceptNull(name);
    }
  }

  static class ConstructorAcceptsNull {

    final String name;

    public ConstructorAcceptsNull(@Nullable String name) {
      this.name = name;
    }
  }

  static class ConstructorDoesNotAcceptNull {

    final String name;