final String result = chatClient.testBuildAssistantHistoryContent(msg, "smart_summary", 500, 500);
        assertEquals("Short response", result);
    }

    @Test
    public void test_buildAssistantHistoryContent_smartSummary_noSources() {
        final ChatMessage msg = ChatMessage.assistantMessage("A".repeat(1000));
        final String result = chatClient.testBuildAssistantHistoryContent(msg, "smart_summary", 500, 500);