@Override
  public Set getAdditionalKeysForIterator(LocalRegion currRgn) {
    if (realDeal == null) {
      return null;
    }
    return getRealDeal(null, currRgn).getAdditionalKeysForIterator(currRgn);
  }
This returns either the TXState for the current transaction or a proxy for the state if it is
held in another member. If no state currently exists, one is created

@param key the key of the entry that is currently being modified
@param r the region that is currently being modified
@return the state or a proxy for the state
geode-core/src/main/java/org/apache/geode/internal/cache/TXStateProxyImpl.java