return failedQuery;
        }
    }

    @Override
    public void streamGenerateAnswer(final String userMessage, final List<Map<String, Object>> documents, final List<LlmMessage> history,
            final LlmStreamCallback callback) {
        if (logger.isDebugEnabled()) {
            logger.debug("[RAG:ANSWER] streamGenerateAnswer. userMessage={}, documentCount={}, historySize={}", userMessage,

                            llmClientManager.generateFaqAnswerResponse(userMessage, fullDocs, history, answerCallback);
                        } else {
                            llmClientManager.streamGenerateAnswer(userMessage, fullDocs, history, answerCallback);
                        }
                        callback.onPhaseComplete(ChatPhaseCallback.PHASE_ANSWER);
                        if (logger.isDebugEnabled()) {