updateConfigListenerMap.put(name, listener);
    }

    /**
     * Checks if the cluster state has changed.
     *
     * @param status The current cluster status.
     * @return true if the state has changed, false otherwise.
     */
    public boolean isChangedClusterState(final int status) {
        return previousClusterState.getAndSet(status) != status;
    }

                    if (values == null || values.length == 0) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("Parameter '{}' is not present or has no value.", s);
                        }
                        return null;
                    }
                    return new RequestParameter(s, values);