*
     * @return true if LLM chat is configured and available, false otherwise
     */
    public boolean available() {
        final String llmType = getLlmType();
        if (Constants.NONE.equals(llmType)) {
            if (logger.isTraceEnabled()) {
                logger.trace("[LLM] LLM not available. llmType=none");
            }
            return false;
        }

            return 0;
        }

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

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

        @Override
        protected String getConfigPrefix() {
            return "rag.llm.test";
        }

        @Override