docs: private void _cleanChildren() {
          //bStatsTreeNeedsUpdate = true;
          if (children != null) {
              Iterator values = children.values().iterator();
  
              while (values.hasNext()) {
                  ModuleItem remMI = (ModuleItem) values.next();
                  remMI.getInstance().cleanup();
  
                  //_cleanMBean(remMI);
                  remMI._cleanChildren();
                  remMI = null;
              }
  
              children.clear();
          }
      }