@Override
    public boolean equals(Object o2) {
      if (o2 instanceof MemberPRInfo) {
        return region.equals(((MemberPRInfo) o2).region);
      } else {
        return false;
      }
    }
This class was introduced so that it can be mocked
to all executeRebalanceOnDS to be unit tested
geode-core/src/main/java/org/apache/geode/management/internal/operation/RebalanceOperationPerformer.java