serializer/src/main/java/org/apache/xml/serializer/Version.java [79:101]:
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  static void parseVersionNumber(String version) {
    resetVersionNumber();
    if (version == null)
      version = NO_VERSION;
    Matcher matcher = Pattern.compile(VERSION_NUMBER_PATTERN).matcher(version);
    if (matcher.find()) {
      majorVersionNum = Integer.parseInt(matcher.group(1));
      releaseVersionNum = Integer.parseInt(matcher.group(2));
      if (matcher.group(3) == null) {
        maintenanceVersionNum = Integer.parseInt(matcher.group(4));
      } else {
        developmentVersionNum = Integer.parseInt(matcher.group(4));
      }
      snapshot = matcher.group(5) != null && !matcher.group(5).isEmpty();
    } else {
      System.err.println(
        "Cannot match Xalan version \"" + version + "\" " +
          "against expected pattern \"" + VERSION_NUMBER_PATTERN + "\", " +
          "resetting version number to "+ NO_VERSION
      );
      resetVersionNumber();
    }
    }
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xalan/src/main/java/org/apache/xalan/Version.java [83:105]:
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  static void parseVersionNumber(String version) {
    resetVersionNumber();
    if (version == null)
      version = NO_VERSION;
    Matcher matcher = Pattern.compile(VERSION_NUMBER_PATTERN).matcher(version);
    if (matcher.find()) {
      majorVersionNum = Integer.parseInt(matcher.group(1));
      releaseVersionNum = Integer.parseInt(matcher.group(2));
      if (matcher.group(3) == null) {
        maintenanceVersionNum = Integer.parseInt(matcher.group(4));
      } else {
        developmentVersionNum = Integer.parseInt(matcher.group(4));
      }
      snapshot = matcher.group(5) != null && !matcher.group(5).isEmpty();
    } else {
      System.err.println(
        "Cannot match Xalan version \"" + version + "\" " +
          "against expected pattern \"" + VERSION_NUMBER_PATTERN + "\", " +
          "resetting version number to "+ NO_VERSION
      );
      resetVersionNumber();
    }
  }
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