public RegionFactory<K, V> setOffHeap(boolean offHeap) {
    attrsFactory.setOffHeap(offHeap);
    return this;
  }
Enables this region's usage of off-heap memory if true.

@param offHeap boolean flag to enable off-heap memory
@return a reference to this RegionFactory instance
@since Geode 1.0
geode-core/src/main/java/org/apache/geode/cache/RegionFactory.java