code: function getCompleteSelectors(info, useGroup) {
          if (info.parentSelectors) {
              // Show parents with / separators.
              var completeSelectors = info.parentSelectors + " / ";
              if (useGroup && info.selectorGroup) {
                  completeSelectors += info.selectorGroup;
              } else {
                  completeSelectors += info.selector;
              }
              return completeSelectors;
          } else if (useGroup && info.selectorGroup) {
              return info.selectorGroup;
          }
  
          return info.selector;
      }
docs: Return a string that shows the literal parent hierarchy of the selector
  in info.
  
  @param {!SelectorInfo} info
  @param {boolean=} useGroup true to append selectorGroup instead of selector
  @return {string} the literal parent hierarchy of the selector