# File lib/adaptation/xmlblaster/xmlblaster_callback_client.rb, line 65
  def unsubscribe( xmlKey, qos )
    begin
      returnValue = @proxy.call("xmlBlaster.unSubscribe", @sessionId, xmlKey,  qos )
      @audit.info( "==> ::UNSUBSCRIBE:: <==      Success unSubscribing with sessionID #{@sessionId}" )
    rescue  => e
      @audit.warn( "XMLBlasterClient: Error unsubscribing from MOM: #{e}" )
      raise e
    end
    return true
  end