      *  
      *  @langversion 3.0
      *  @playerversion Flash 10
-     *  @playerversion AIR 2.0
+     *  @playerversion AIR 2.5
      *  @productversion Flex 4.5
      */
     public function invalidateCell(rowIndex:int, columnIndex:int):void

     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.0
     *  @productversion Flex 4.5
     */
    public function getColumnWidth(columnIndex:int):Number

    [Bindable("caretRowIndexChanged")]
    
    /**
     *  If <code>showCaretIndicator</code> is <code>true</code>,   
     *  the row index of the <code>caretIndicator</code>.
     *  If <code>selectionMode</code> is
     *  <code>GridSelectionMode.SINGLE_ROW</code> or
     *  <code>GridSelectionMode.MULTIPLE_ROWS</code> then the indicator
     *  occupies the entire row and the <code>caretColumnIndex</code> 
     *  property is ignored.  
     *  If <code>selectionMode</code> is <code>GridSelectionMode.SINGLE_CELL</code> or
     *  <code>GridSelectionMode.MULTIPLE_CELLS</code>, then the <code>caretIndicator</code>
     *  occupies the specified cell.
     * 
     *  <p>Setting <code>caretRowIndex</code> to -1 means that the row index 
     *  is undefined and the caret will not be shown.</p>
     * 
     *  @default -1
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5 
     */
    public function get caretRowIndex():int
