get_has_subtitle
  
  Description:
  [ 
Version ( since = 
"3.12" ) ]
public bool get_has_subtitle ()
  
 
  
    Retrieves whether the header bar reserves space for a subtitle, regardless if one is currently set or not.
    Parameters:
    
    Returns:
    
      
        | 
           true if the header bar reserves space  for a subtitle 
         |