@Override
  public void process(ClusterDistributionManager dm) {
    PartitionedRegion.validatePRID(getSender(), regionId, regionName);
  }
completely override process() from PartitionMessage. This message doesn't operate on a specific
partitioned region, so the superclass impl doesn't make any sense to it.

@param dm the distribution manager to use
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/PRSanityCheckMessage.java