  */
 public class GroupBase extends UIComponent implements IViewport
 {
+
     //--------------------------------------------------------------------------
     //
     //  Constructor

            }
        }
    }
}

}

        _explicitAlpha = value;
    }
    
    //----------------------------------
    //  baselinePosition
    //----------------------------------

    /**
     *  @inheritDoc
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    override public function get baselinePosition():Number
    {
        if (!validateBaselinePosition())
            return NaN;

        // Unless the height is very small, the baselinePosition
        // of a generic UIComponent is calculated as if there was
        // a UITextField using the component's styles
        // whose top coincides with the component's top.
        // If the height is small, the baselinePosition is calculated
        // as if there were text within whose ascent the component
        // is vertically centered.
        // At the crossover height, these two calculations
        // produce the same result.

        return TextUtil.calculateFontBaseline(this, height, moduleFactory);
    }

    //----------------------------------
    //  mouseChildren
    //----------------------------------
