private void handleRemoveTool(VerticalCommand cmd) {
      Object[] params = cmd.getParams();
      AID tool = (AID) params[0];

      MainContainer impl = myContainer.getMain();
      if (impl != null) {
        impl.toolRemoved(tool);
      } else {
        // Do nothing for now, but could also route the command to the main slice, thus enabling
        // e.g. AMS replication
      }
    }