docs: public static final String updateFilenameHashCode(EnterpriseBean enterpriseBean, String oldName)
      {
          String newName = null;
          int len = oldName.length();
          int last_ = (len > 9 && (oldName.charAt(len - 9) == '_')) ? len - 9 : -1;
          // input file name must have a trailing "_" follows by 8 hex digits
          // and check to make sure the last 8 characters are all hex digits
          if (last_ != -1 && allHexDigits(oldName, ++last_, len))
          {
              String hashStr = getHashStr(enterpriseBean);
              newName = oldName.substring(0, last_) + BuzzHash.computeHashStringMid32Bit(hashStr, true);
          }
          return newName;
      }