public String toString() {
    if (Boolean.getBoolean("debug.Management")) {
      return " ObjectName = " + objectName + ",InterfaceClassName = " + interfaceClassName
          + ", NotificationEmitter = " + notificationEmitter + ", ObjectState = "
          + objectState.toString();
    } else {
      return "ObjectName = " + objectName;
    }
  }
Managing node will get Object state by calling this method

@return value of the given property
geode-core/src/main/java/org/apache/geode/management/internal/FederationComponent.java