private String getStatisticArchiveFileName() {
    String statisticsArchiveFileName = getGemFireProperties().get(STATISTIC_ARCHIVE_FILE);
    if (statisticsArchiveFileName == null) {
      statisticsArchiveFileName = DEFAULT_STATISTIC_ARCHIVE_FILE_NAME;
    }
    return statisticsArchiveFileName;
  }
Instance reference which is set in static initialization blocks of any subclasses.
extensions/geode-modules/src/main/java/org/apache/geode/modules/session/bootstrap/AbstractCache.java