private Config loadConfigFromFile() {
        if (configFile.exists()) {
            try {
                return Config.fromJSON(configFile);
            } catch (IOException e) {
                throw new RuntimeException(String.format("Error reading Redisson configuration file: %s", configFile), e);
            }
        } else {
            throw new RuntimeException(String.format("Redisson configuration file: '%s' does not exist", configFile));
        }
    }
@param storeName a name to associate with the instance
@return a new or existing Redis client for the given store name
gateway/engine/redis/src/main/java/io/apiman/gateway/engine/redis/common/RedisClientManager.java