get_layout_manager
Description:
Retrieves the LayoutManager used by this.
Parameters:
| this | 
           a Actor  | 
      
Returns:
| 
           a pointer to the LayoutManager, or   | 
      
Retrieves the LayoutManager used by this.
| this | 
           a Actor  | 
      
| 
           a pointer to the LayoutManager, or   |