public static HARegionAdvisor createHARegionAdvisor(CacheDistributionAdvisee region) {
      HARegionAdvisor advisor = new HARegionAdvisor(region);
      advisor.initialize();
      return advisor;
    }
HARegions have their own advisors so that interest registration state can be tracked
geode-core/src/main/java/org/apache/geode/internal/cache/HARegion.java