private void readObject(java.io.ObjectInputStream in)
      throws IOException, ClassNotFoundException {}
An implementation of {@link ObjectSizer} that calculates an accurate, in memory size of for each
object that it sizes. This is the slowest method of calculating sizes, but it should accurately
reflect the amount of heap memory used for objects.

This class will traverse all objects that are reachable from the passed in object by instance
fields. So use this class with caution if you have instance fields that refer to shared objects.

For objects that are all approximately the same size, consider using
{@link SizeClassOnceObjectSizer}
geode-core/src/main/java/org/apache/geode/internal/size/ReflectionObjectSizer.java