title: Read the header of an MQ message
body: <p>I am getting a message from MQ with the following code</p>
  
  <pre><code>MQQueue queue = mqManager.AccessQueue(queueName, openOptions);
  
  MQGetMessageOptions gmo = new MQGetMessageOptions();
  gmo.Options = MQC.MQGMO_FAIL_IF_QUIESCING | MQC.MQGMO_WAIT;
  gmo.WaitInterval = MQC.MQWI_UNLIMITED;
  
  queue.Get(message, gmo);
  
  string message = message.ReadString(message.MessageLength);
  </code></pre>
  
  <p>The problem is I need access to the header information of this message as well. Namely the userId from whom the message was sent which is found in the header information. How can I access the header information of the message?</p>