docs: function (widgetName, skinClass, skipError) {
              var widgetSkinObj = this.getSkinClasses(widgetName);
              if (widgetSkinObj) {
                  if (skinClass == null) {
                      skinClass = 'std';
                  }
                  var skinClassObj = widgetSkinObj[skinClass];
                  if (skinClassObj) {
                      return skinClassObj;
                  } else if (!skipError) {
                      this.$logWarn(this.WIDGET_SKIN_CLASS_OBJECT_NOT_FOUND, [skinClass, widgetName]);
                      return widgetSkinObj.std;
                  }
                  return null;
              }
          }