Tests added here will be seen by all designers of language specific prompts.

Use as follows:

* Have a language specific prompt – `docs/{language code}/llm-prompt.md`.
* Do a fresh translation of this document into your desired target language (see e.g. the `translate-page` command of the `translate.py`). This will create the translation under `docs/{language code}/docs/_llm-test.md`.

      assertWithMessage("Expected to return non-null for: %s", mutableClass)
          .that(instance)
          .isNotNull();
      assertNotSame(
          "Expected to return fresh instance for: " + mutableClass,
          instance,
          ArbitraryInstances.get(mutableClass));
    }
  }

  private enum EmptyEnum {}

  private enum Direction {
    UP,
    DOWN
  }

      assertWithMessage("Expected to return non-null for: %s", mutableClass)
          .that(instance)
          .isNotNull();
      assertNotSame(
          "Expected to return fresh instance for: " + mutableClass,
          instance,
          ArbitraryInstances.get(mutableClass));
    }
  }

  private enum EmptyEnum {}

  private enum Direction {
    UP,
    DOWN
  }