code: public PacketStream createStream() {
  		ServiceBrokerConfig config = eventbus.getBroker().getConfig();
  		return new PacketStream(config.getNodeID(), config.getScheduler());
  	}
docs: Creates a stream what is suitable for transferring large files (or other
  "unlimited" media content) between Moleculer Nodes. Sample:<br>
  
  <pre>
  public Action send = ctx -&gt; {
  PacketStream reqStream = ctx.createStream();
  
  ctx.call("service.action", reqStream).then(rsp -&gt; {
  
  // Receive bytes into file
  PacketStream rspStream = (PacketStream) rsp.asObject();
  rspStream.transferTo(new File("out"));
  }
  
  // Send bytes from file
  reqStream.transferFrom(new File("in"));
  }
  </pre>
  
  @return new stream