gozirra-ws/src/main/java/com/hi3project/vineyard/comm/stomp/gozirraws/Stomp.java
public void unsubscribe( String name, Map header ) {
    if (header == null) header = new HashMap();
    synchronized( _listeners ) { _listeners.remove( name ); }
    header.put( "destination", name );
    transmit( Command.UNSUBSCRIBE, header );
  }
public void unsubscribe( String name, Map header ) {
    if (header == null) header = new HashMap();
    synchronized( _listeners ) { _listeners.remove( name ); }
    header.put( "destination", name );
    transmit( Command.UNSUBSCRIBE, header );
  }
Unsubscribe from a channel.  Automatically unregisters all
listeners of the channel.  To re-subscribe with listeners,
subscribe must be passed the listeners again.

@param name The name of the channel to unsubscribe from.
@param header Additional headers to send to the server.