@Override
  public void fromData(DataInput in,
      DeserializationContext context) throws IOException, ClassNotFoundException {
    super.fromData(in, context);
    load = new ServerLoad();
    InternalDataSerializer.invokeFromData(load, in);
    location = new ServerLocation();
    InternalDataSerializer.invokeFromData(location, in);
    clientIds = DataSerializer.readArrayList(in);
  }
A message from a server to a locator to update the locator with new load information from the
server. Also includes the id of any clients whose estimate is no longer needed on the
server-locator.

@since GemFire 5.7
geode-core/src/main/java/org/apache/geode/cache/client/internal/CacheServerLoadMessage.java