get_default_group
  
  Description:
  [ 
Version ( since = 
"2.4" ) ]
public unowned Window get_default_group ()
  
    Returns the default group leader window for all toplevel windows on this.
     This window is implicitly created by GDK. See set_group.
    Parameters:
    
    Returns:
    
      
        | The default group leader window for this |