@Override
  public ClientRegionFactory<K, V> setCustomEntryIdleTimeout(CustomExpiry<K, V> custom) {
    attrsFactory.setCustomEntryIdleTimeout(custom);
    return this;
  }
Returns the cache used by this factory.
geode-core/src/main/java/org/apache/geode/cache/client/internal/ClientRegionFactoryImpl.java