get_filter
Description:
Gets the current filter.
Note: 
      
        
    
    Use [class@Gtk.FileDialog] instead
Parameters:
| this | 
           a `GtkFileChooser`  | 
      
Returns:
| 
           the current filter  | 
      
Gets the current filter.
Use [class@Gtk.FileDialog] instead
| this | 
           a `GtkFileChooser`  | 
      
| 
           the current filter  |