EntryCompletion.with_area
Description:
Creates a new `GtkEntryCompletion` object using the specified area.
Note: 
      
        
    
    GtkEntryCompletion will be removed in GTK 5.
The `GtkCellArea` is used to layout cells in the underlying `GtkTreeViewColumn` for the drop-down menu.
Parameters:
| area | 
           the `GtkCellArea` used to layout cells  | 
      
Returns:
| 
           A newly created `GtkEntryCompletion` object  |