docs: function getPerformanceTimingData() {
          var PerformanceObj = {
              'redirecting': performance.timing.fetchStart - performance.timing.navigationStart,
              'dnsconnect': performance.timing.requestStart - performance.timing.fetchStart,
              'request': performance.timing.responseStart - performance.timing.requestStart,
              'response': performance.timing.responseEnd - performance.timing.responseStart,
              'domprocessing': performance.timing.domComplete - performance.timing.responseEnd,
              'load': performance.timing.loadEventEnd - performance.timing.loadEventStart
          };
  
          /**
           * Obtaining the transferred kb of resources inluding estimated document size.
           */
          if (window.performance && window.performance.getEntriesByType) {
              var resource;
              var resources = window.performance.getEntriesByType('resource');
              var documentSize = unescape(encodeURIComponent(document.documentElement.innerHTML)).length / 4.2;
              var byteTotal = 0;
              for (var i = 0; i < resources.length; i++) {
                  resource = resources[i];
                  byteTotal = byteTotal + resource.transferSize;
              }
              PerformanceObj.transferbytes = byteTotal + Math.round(documentSize);
              PerformanceObj.transferrequests = resources.length + 1;
          }
  
          return PerformanceObj;
      }