@Override
      public boolean isSerialized() {
        throw new UnsupportedOperationException();
      }
This class is a bit of a hack used by the compactor. For the compactor always copies to a
byte[] so this class is just a simple wrapper. It is possible that the length of the byte
array is greater than the actual length of the wrapped data. At the time we create this we
are all done with isSerialized and userBits so those methods are not supported.
geode-core/src/main/java/org/apache/geode/internal/cache/entries/DiskEntry.java