public interface KnownSizeEstimation
SizeEstimator more accurate size estimation.
 When a class extends it, SizeEstimator will query the estimatedSize, and use
 the returned size as the size of the object. The difference between a KnownSizeEstimation
 and SizeTracker is that, a
 SizeTracker still uses SizeEstimator to
 estimate the size. However, a KnownSizeEstimation can provide a better estimation without
 using SizeEstimator.| Modifier and Type | Method and Description | 
|---|---|
| long | estimatedSize() |