code: function SessionManager(config) {
        this.start = __bind(this.start, this);
        this.storeKey = __bind(this.storeKey, this);
        this.config = extend(this.defaults.config, config);
        this.RedisClient = redis.createClient(config.redis.port, config.redis.host, config.redis);
      }
docs: /*
  Create an instance of this class.
  
  @param {object} config The configuration to be used.