/**
  * Call this, to push a {@link InputMessage} to all {@link InputChannel}s, that return ture on
  * calling {@link InputChannel#isMatchingFilter(String)}
  *
  * @param message The {@link InputMessage} which should pushed
  */
 private void fireInputChannelMessage(InputMessage message) {
   for (InputChannel i : inputChannels)
     if (i.isMatchingFilter(message.getText())) i.onMessageReceived(message);
 }