public Token getValueAsToken(@Unretained OffHeapRegionEntry regionEntry) {
    return addressToToken(regionEntry.getAddress());
  }
The previous value at the address in 're' will be @Released and then the address in 're' will
be set to the @Unretained address of 'v'.
geode-core/src/main/java/org/apache/geode/internal/offheap/OffHeapRegionEntryHelperInstance.java