def removeNotificationListener(listener, filter=nil, handback=nil)
      found = false
      listeners.delete_if do |clistener, (cfilter, chandback)|
        v = listener == clistener && filter == cfilter && handback == chandback
        found = true if v
        v
      end
      raise javax.management.ListenerNotFoundException.new unless found
    end
def removeNotificationListener(listener, filter=nil, handback=nil)
      found = false
      listeners.delete_if do |clistener, (cfilter, chandback)|
        v = listener == clistener && filter == cfilter && handback == chandback
        found = true if v
        v
      end
      raise javax.management.ListenerNotFoundException.new unless found
    end
NotificationListener listener, NotificationFilter filter, Object handback