public <T> T getMBeanProxy(ObjectName objectName, Class<T> interfaceClass) {
    if (!isStartedAndOpen()) {
      return null;
    }
    if (federatingManager == null) {
      return null;
    }
    if (!federatingManager.isRunning()) {
      return null;
    }
    return federatingManager.findProxy(objectName, interfaceClass);
  }
It will stop the federating Manager and restart the Local cache operation
geode-core/src/main/java/org/apache/geode/management/internal/SystemManagementService.java