/**
   * @param chkKeys List of String objects with the shas
   * @param targetFile target file
   * @return true if write was successful
   */
  public static boolean writeRequestFile(
      final FileRequestFileContent content, final File targetFile) {

    final Document doc = XMLTools.createDomDocument();
    if (doc == null) {
      logger.severe("Error - writeRequestFile: factory could'nt create XML Document.");
      return false;
    }

    final Element rootElement = doc.createElement(TAG_FrostFileRequestFile);
    doc.appendChild(rootElement);

    final Element timeStampElement = doc.createElement(TAG_timestamp);
    final Text timeStampText = doc.createTextNode(Long.toString(content.getTimestamp()));
    timeStampElement.appendChild(timeStampText);
    rootElement.appendChild(timeStampElement);

    final Element rootChkElement = doc.createElement(TAG_shaList);
    rootElement.appendChild(rootChkElement);

    for (final String chkKey : content.getShaStrings()) {

      final Element nameElement = doc.createElement(TAG_sha);
      final Text text = doc.createTextNode(chkKey);
      nameElement.appendChild(text);

      rootChkElement.appendChild(nameElement);
    }

    boolean writeOK = false;
    try {
      writeOK = XMLTools.writeXmlFile(doc, targetFile);
    } catch (final Throwable t) {
      logger.log(Level.SEVERE, "Exception in writeRequestFile/writeXmlFile", t);
    }

    return writeOK;
  }