@Override
    public ServiceCacheBuilder<T> threadFactory(ThreadFactory threadFactory)
    {
        this.threadFactory = threadFactory;
        this.executorService = null;
        return this;
    }
@ Override public ServiceCacheBuilder < T > threadFactory ( ThreadFactory threadFactory ) { this . threadFactory = threadFactory ; this . executorService = null ; return this ; }
Optional thread factory to use for the cache's internal thread

@param threadFactory factory
@return this