@Override
  public boolean isThisRegionBeingClosedOrDestroyed() {
    return isDestroyed;
  }
Returns true if this region is or has been closed or destroyed. Note that unlike
{@link #isDestroyed()} this method will not return true if the cache is closing but has not yet
started closing this region.
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java