code: function writeClientLibXml(item, options) {
      var content = '<?xml version="1.0" encoding="UTF-8"?>' +
          '<jcr:root xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"' +
          ' jcr:primaryType="cq:ClientLibraryFolder"';
  
      if (item.hasOwnProperty('categories')) {
          var fieldValue = item.categories.join(',');
          content += ' categories="[' + fieldValue + ']"';
      } else {
          content += ' categories="[' + item.name + ']" ';
      }
  
      clientLibDirectoryFields.forEach(function (fieldKey) {
        if (item.hasOwnProperty(fieldKey)) {
            if (typeof item[fieldKey] === 'boolean') {
              // Boolean value
              content += ' ' + fieldKey + '="{Boolean}' + item[fieldKey] + '"';
            } else if (Array.isArray(item[fieldKey])) {
              // Array of strings
              var fieldValue = item[fieldKey].join(',');
              content += ' ' + fieldKey + '="[' + fieldValue + ']"';
            } else if (typeof item[fieldKey] === 'string') {
              // String value
              content += ' ' + fieldKey + '="' + item[fieldKey] + '"';
            }
        }
      });
  
      content += "/>";
      var outputPath = item.outputPath || path.join(item.path, item.name);
      var contentXml = path.join(outputPath + "/.content.xml");
  
      options.verbose && console.log("write clientlib json file: " + contentXml);
  
      fse.writeFileSync(contentXml, content);
  }
docs: Write a configuration XML file for a clientlib
  with the given properties in `item`
  @param {ClientLibItem} item - clientlib configuration properties
  @param {Object} options - further options