httpClient = null;
        }
    }

    /**
     * Starts periodic availability checking if RAG chat is enabled.
     */
    protected void startAvailabilityCheck() {
        if (!isRagChatEnabled()) {
            if (logger.isDebugEnabled()) {
                logger.debug("RAG chat is disabled. Skipping availability check.");
            }
            return;
        }

        }

        @Override
        protected int getAvailabilityCheckInterval() {
            return 0;
        }

        @Override
        protected boolean isRagChatEnabled() {
            return false;
        }

        @Override
        protected String getLlmType() {
            return "test";
        }

        @Override