attribute_disconnect
Description:
[ Version ( since = "3.0" ) ]
public void attribute_disconnect (CellRenderer renderer, string attribute)
  public void attribute_disconnect (CellRenderer renderer, string attribute)
Disconnects attribute for the renderer in this so that attribute will no longer be 
      updated with values from the model.
Parameters:
| this | 
           a CellArea  | 
      
| renderer | 
           the CellRenderer to disconnect an attribute for  | 
      
| attribute | 
           the attribute name  |