Method readNext

fdbserver/DiskQueue.actor.cpp:1594–1594

	// IDiskQueue
	Future<bool> initializeRecovery(location recoverAt) override { return queue->initializeRecovery(recoverAt); }
	Future<Standalone<StringRef>> readNext(int bytes) override { return readNext(this, bytes); }

	location getNextReadLocation() const override { return queue->getNextReadLocation(); }