assertEquals("Response text\n[Referenced documents: Installation Guide, Quick Start]", result);
    }

    @Test
    public void test_buildAssistantHistoryContent_sourceTitles_withoutSources() {
        final ChatMessage msg = ChatMessage.assistantMessage("Response without sources");
        final String result = chatClient.testBuildAssistantHistoryContent(msg, "source_titles", 500, 500);