docs: function (browser) {
              var classes = ["stage"], value;
  
              for (var key in browser) {
                  if (browser.hasOwnProperty(key)) {
  
                      value = browser[key];
  
                      if (typeof(value) === "boolean") {
                          if (browserClassMap.hasOwnProperty(key)) {
                              classes.push(browserClassMap[key][value ? 0 : 1]);
                          } else if (key === 'isIOS' && value) {
                              classes.push('ios');
                              classes.push('ios' + this._getIOSVersion());
                          }
                      } else {
                          if (key === 'version') {
                              classes.push(browser.name + value);
                          } else {
                              classes.push(value);
                          }
                      }
                  }
              }
  
              this.set('componentClass', classes.join(" "));
          }