public HttpProxyCacheServer build() {
            Config config = buildConfig();
            return new HttpProxyCacheServer(config);
        }
Builds new instance of {@link HttpProxyCacheServer}.

@return proxy cache. Only single instance should be used across whole app.
dkplayer-videocache/src/main/java/com/danikula/videocache/HttpProxyCacheServer.java