public RegionService getRegionService() {
    return regionService;
  }
By setting "gemfire.sort-json-field-names" to true, enables serialization of JSON field in JSON
document to be sorted. That can help to reduce the number of pdx typeId generation if different
JSON documents have same fields in the different order.
geode-core/src/main/java/org/apache/geode/pdx/JSONFormatter.java