while (matcher.find()) {
            final String tagStr = matcher.group();
            final Matcher attrMatcher = attrPattern.matcher(tagStr);
            final StringBuilder buf = new StringBuilder(100);
            while (attrMatcher.find()) {
                buf.append(attrMatcher.group(1)).append(' ');
            }

    checkNotNull(separator);
    if (array.length == 0) {
      return "";
    }

    // For pre-sizing a builder, just get the right order of magnitude
    StringBuilder builder = new StringBuilder(array.length * 7);
    builder.append(array[0]);
    for (int i = 1; i < array.length; i++) {
      builder.append(separator).append(array[i]);
    }
    return builder.toString();
  }

    checkNotNull(separator);
    if (array.length == 0) {
      return "";
    }

    // For pre-sizing a builder, just get the right order of magnitude
    StringBuilder builder = new StringBuilder(array.length * 7);
    builder.append(array[0]);
    for (int i = 1; i < array.length; i++) {
      builder.append(separator).append(array[i]);
    }
    return builder.toString();
  }

            factory.setXIncludeAware(includeAware);

            final DocumentBuilder builder = factory.newDocumentBuilder();

            final Document doc = builder.parse(is);

            final StringBuilder buf = new StringBuilder(1000);
            buf.append(getResultDataHeader());
            for (final Map.Entry<String, String> entry : fieldRuleMap.entrySet()) {
                final List<String> nodeStrList = new ArrayList<>();

    //                                                                      ==============
    @Override
    protected String doBuildColumnString(String dm) {
        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(available);
        sb.append(dm).append(crawler);
        sb.append(dm).append(createdBy);
        sb.append(dm).append(createdTime);

  String convert(CaseFormat format, String s) {
    // deal with camel conversion
    StringBuilder out = null;
    int i = 0;
    int j = -1;
    while ((j = wordBoundary.indexIn(s, ++j)) != -1) {
      if (i == 0) {
        // include some extra space for separators
        out = new StringBuilder(s.length() + 4 * format.wordSeparator.length());
        out.append(format.normalizeFirstWord(s.substring(i, j)));

        return blacklisted;
    }

    public void setBlacklisted(boolean blacklisted) {
        this.blacklisted = blacklisted;
    }

    public String toString() {
        StringBuilder sb = new StringBuilder(256);

        sb.append("       id: ").append(getId()).append('\n');
        sb.append("      url: ").append(getUrl()).append('\n');

        AbstractRepositoryMetadata repoMetadata = (AbstractRepositoryMetadata) metadata;
        this.metadata.merge(repoMetadata.getMetadata());
    }

    public String extendedToString() {
        StringBuilder buffer = new StringBuilder(256);

        buffer.append(LS).append("Repository Metadata").append(LS).append("--------------------------");
        buffer.append(LS).append("GroupId: ").append(getGroupId());

        return dataLength;
    }

    public void setDataLength(int dataLength) {
        this.dataLength = dataLength;
    }

    public String toString() {
        StringBuilder sb = new StringBuilder(64);

        sb.append("TransferEvent[");

        switch (this.getRequestType()) {
            case REQUEST_GET:
                sb.append("GET");
                break;

        }

        String filePath = uri;
        if (!filePath.startsWith("file:")) {
            filePath = "file://" + filePath;
        }

        final StringBuilder buf = new StringBuilder(filePath.length() + 100);
        try {
            for (final char c : filePath.toCharArray()) {
                if (c == ' ') {
                    buf.append("%20");
                } else {