     }
 
     /**
-     *  Returns the current pixel bounds of the specified column, or null if no such column exists.
-     *  Column bounds are reported in grid coordinates.
-     * 
-     *  <p>If all of the cells in the specified column have not yet been scrolled into view, the 
-     *  returned bounds may only be an approximation, based on the column's <code>typicalItem</code>.</p>
-     *  
-     *  @param columnIndex The 0-based index of the column. 
-     *  @return A <code>Rectangle</code> that represents the column's pixel bounds, or null.
+     *  @copy spark.components.Grid#getColumnBounds()
      * 
      *  @langversion 3.0
      *  @playerversion Flash 10

        return dataProvider.getItemAt(rowIndex);
    }
    
	//--------------------------------------------------------------------------
	//
	//  Updating the GridDimensions' typicalCell sizes and columnWidths
	//
	//-------------------------------------------------------------------------- 
    
    /**
     *  @private

        
        var measuredWidth:Number = gridDimensions.getTypicalContentWidth(grid.requestedColumnCount);
        var measuredHeight:Number = gridDimensions.getTypicalContentHeight(measuredRowCount);
        var measuredMinWidth:Number = gridDimensions.getTypicalContentWidth(grid.requestedMinColumnCount);
        var measuredMinHeight:Number = gridDimensions.getTypicalContentHeight(grid.requestedMinRowCount);
        
        // Use Math.ceil() to make sure that if the content partially occupies
        // the last pixel, we'll count it as if the whole pixel is occupied.
        
