@Override
  public Object setUserAttribute(Object value) {
    checkEntryDestroyed();
    return region.getEntryUserAttributes().put(regionEntry.getKey(), value);
  }
Makes a copy, if copy-on-get is enabled, of the specified object.

@since GemFire 4.0
geode-core/src/main/java/org/apache/geode/internal/cache/EntrySnapshot.java