@Override
  boolean usesDiskStore(RegionAttributes regionAttributes) {
    if (regionAttributes.getPartitionAttributes().getLocalMaxMemory() <= 0) {
      return false; // see bug 42055
    }
    return super.usesDiskStore(regionAttributes);
  }
Used to get membership events from our advisor to implement RegionMembershipListener
invocations. This is copied almost in whole from DistributedRegion

@since GemFire 5.7
geode-core/src/main/java/org/apache/geode/internal/cache/PartitionedRegion.java