     }
     
     /**
+     *  @private
      *  Method is called when a tab is clicked by the user.  The default 
      *  implementation checks if the clicked tab is currently selected, and if
      *  so, pops the active navigator to its root view.

    }
    
    /**
     *  Add the item at the specified index.  
     *  Any item that was after this index is moved out by one.  
     * 
     *  @param item the item to place at the index.  Must extend <code>ViewNavigatorBase</code>
     *  @param index the index at which to place the item
     *  @throws RangeError if index is less than 0 or greater than the length
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10.1
     *  @playerversion AIR 2.5

    }
    
    /**
     *  Add the view navigator at the specified index.  
     *  If an item was already at that index, the new item replaces it, 
     *  and it is returned.
     *
     *  @param  item The view navigator to place at the index.
     * 
     *  @param  index The index at which to place the navigator.
     * 
     *  @return The navigator that was replaced, or null if none.
     * 
     *  @throws RangeError If index is less than 0 or greater than or equal to length
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10.1
