docs: function (icon, param) {
              var stateObject = this.getStateObject();
              var iconParts = stateObject.icons[icon].split(":");
              var iconInfo = ariaWidgetsAriaSkinInterface.getIcon(iconParts[0], iconParts[1]);
              var active = stateObject.icons[icon + "IsActive"];
              if (iconInfo) {
                  this._icons[icon].iconInfo = iconInfo;
                  this._icons[icon].active = active;
                  if (active) {
                      this._icons[icon].tooltip = this._tooltipLabels[param.activeIconIndex++];
                  }
                  param.width += iconInfo.width + (iconInfo.borderLeft || 0) + (iconInfo.borderRight || 0);
              } else {
                  this.$logError(this.ICON_NOT_FOUND, icon);
              }
          }