!7

cmodule ExtraFrame {
  S mainModuleID;
  transient JComponent visualization;
  
  visual visualization;
  
  start {
    // delete this module when main module is deleted
    dm_vmBus_onMessage_enter moduleDeleted(voidfunc(O mod) {
      if (dm_sameModule(mod, mainModuleID))
        dm_deleteModule();
    });
  }
}