request.setStream(true);

        streamChatWithConcurrencyControl(request, callback);
    }

    // --- Prompt building methods ---

    /**
     * Wraps user input with delimiters, escaping any closing tags in the content.
     *
     * @param userMessage the user's message to wrap
     * @return the wrapped user input
     */
    protected String wrapUserInput(final String userMessage) {

  }

  @Test
  fun hostnameUri() {
    // Host names are special:
    //
    //  * Several characters are forbidden and must throw exceptions if used.
    //  * They don't use percent escaping at all.
    //  * They use punycode for internationalization.
    //  * URI is much more strict than HttpUrl or URL on what's accepted.
    //