@Override
  public boolean initialImagePut(Object key, long lastModified, Object newValue,
      boolean wasRecovered, boolean deferLRUCallback, VersionTag entryVersion,
      InternalDistributedMember sender, boolean forceValue) {
    throw new UnsupportedOperationException();
  }
Used to modify an existing RegionEntry or create a new one when processing the values obtained
during a getInitialImage.
geode-core/src/main/java/org/apache/geode/internal/cache/ProxyRegionMap.java