public Set<String> getSubRegionNames() {
    Set<String> subRegionNames = new HashSet<>();

    if (subRegionInformationSet != null) {
      for (RegionInformation regInfo : subRegionInformationSet) {
        subRegionNames.add(regInfo.getName());
      }
    }

    return subRegionNames;
  }
Gives the most basic common information of a region Used by the GetRegionsFunction for 'list
region' command since 7.0
geode-gfsh/src/main/java/org/apache/geode/management/internal/cli/domain/RegionInformation.java