@Override
  public Set<PartitionedRegion> getPartitionedRegions() {
    Set<PartitionedRegion> result = delegate.getPartitionedRegions();
    checkSetOfRegions(result);
    return result;
  }
This method can be used to locate an internal region.
It should not be invoked with a region name obtained
from a client.
geode-core/src/main/java/org/apache/geode/internal/cache/InternalCacheForClientAccess.java