code: function createEntryRequest(entry) {
      var xw = createXMLWriter(true);
  
      Object.keys(entry).forEach(function(key) {
          xw = xw.startElement('gsx:' + key)
              .text(util.coerceNumber(entry[key]).toString())
              .endElement();
      });
  
      return xw.endElement().toString();
  }
docs: Creates 'create entry' request payload.
  
  @param entry
  @returns {*}