set_title
  
  Description:
  [ 
Version ( since = 
"3.10" ) ]
public void set_title (
string? title)
  
 
  
    Sets the title of the HeaderBar.
     The title should help a user identify the current view. A good title should not include the application name.
    Parameters:
    
      
        | this | 
        
           a HeaderBar 
         | 
      
      
        | title | 
        
           a title, or null 
         |