/**
     * Detects the intent of a user message.
     *
     * @param userMessage the user's message
     * @return the detected intent with extracted keywords
     */
    IntentDetectionResult detectIntent(String userMessage);

    /**
     * Detects the intent of a user message with conversation history context.
     *
     * @param userMessage the user's message
     * @param history the conversation history for context

    }

    @Test
    public void test_isUser() {
        final ChatMessage userMessage = new ChatMessage(ChatMessage.ROLE_USER, "test");
        final ChatMessage assistantMessage = new ChatMessage(ChatMessage.ROLE_ASSISTANT, "test");
        final ChatMessage unknownMessage = new ChatMessage("unknown", "test");

        assertTrue(userMessage.isUser());
        assertFalse(assistantMessage.isUser());

    }

    /**
     * Adds a user message to this session.
     *
     * @param content the message content
     */
    public void addUserMessage(final String content) {
        addMessage(ChatMessage.userMessage(content));
    }

    /**
     * Adds an assistant message to this session.
     *
     * @param content the message content
     */
    public void addAssistantMessage(final String content) {