code: public final long deepSizeOf(Object o) {
  
  		IdentityHashMap<Object, Boolean> seenObjects = new IdentityHashMap<Object, Boolean>(10);
  		return doDeepSizeOf(o, seenObjects);
  	}
docs: Determines the deep memory size of the given object (object or array), visiting all its references
  @param o The object instance to calculate the deep size for
  @return Size in bytes