@Override
  public int getDSFID() {
    return DESTROY_PARTITIONED_REGION_MESSAGE;
  }
@param recipients set of members who have the PartitionedRegion defined.
@param r the PartitionedRegion to destroy on each member
@return the response on which to wait for the confirmation
geode-core/src/main/java/org/apache/geode/internal/cache/DestroyPartitionedRegionMessage.java