/** @return upgrader for activating stacklets. Subclasses may override. */
protected MuxConnector createConnector() {
LoggerBundle logger = LoggerBundle.NOP_IMPL;
LoggerContext loggers = new LoggerContext(logger, logger, logger, logger);
IdURIEncoderDecoder uriCodec = new IdURIEncoderDecoder(new ClientPercentEncoderDecoder());
HashedVersionFactory hashFactory = new HashedVersionZeroFactoryImpl(uriCodec);
Scheduler scheduler = new FuzzingBackOffScheduler.Builder(getRpcScheduler())
.setInitialBackOffMs(ClientFlags.get().initialRpcBackoffMs())
.setMaxBackOffMs(ClientFlags.get().maxRpcBackoffMs())