docs: public static long getTransactorMaxCacheSize(FluoConfiguration conf) {
      long size = conf.getLong(TRANSACTOR_MAX_CACHE_SIZE, TRANSACTOR_MAX_CACHE_SIZE_DEFAULT);
      if (size <= 0) {
        throw new IllegalArgumentException(
            "Cache size must be positive for " + TRANSACTOR_MAX_CACHE_SIZE);
      }
      return size;
    }