get_focus_cell
Description:
Retrieves the currently focused cell for this
Parameters:
| this | 
           a `GtkCellArea`  | 
      
Returns:
| 
           the currently focused cell in this.  | 
      
Retrieves the currently focused cell for this
| this | 
           a `GtkCellArea`  | 
      
| 
           the currently focused cell in this.  |