code: private static String cleanSystemId(final String sysId)
      {
          int ix = sysId.indexOf('|');
          if (ix > 0 && URI_WINDOWS_FILE_PATTERN.matcher(sysId).matches()) {
              StringBuilder sb = new StringBuilder(sysId);
              sb.setCharAt(ix, ':');
              return sb.toString();
          }
          return sysId;
      }
docs: /*
  /////////////////////////////////////////
  Private helper methods
  /////////////////////////////////////////