code: function extractScrollbars(content) {
          var scrollbar = [];
  
          // Go through and extract out scrollbar customizations so that we can
          // enable/disable via settings.
          content = content
              .replace(scrollbarsRegex, function (match) {
                  scrollbar.push(match);
                  return "";
              });
  
          return {
              content: content,
              scrollbar: scrollbar
          };
      }
docs: @private
  Extracts the scrollbar text from the css/less content so that it can be treated
  as a separate styling component that can be anabled/disabled independently from
  the theme.
  
  @param {string} content is the css/less input string to be processed
  @return {{content: string, scrollbar: Array.<string>}} content is the new css/less content
  with the scrollbar rules extracted out and put in scrollbar