Is it possible to add word autocompletion to SearchEntry widget?

[Wanpaku]

I want to add word autocompletion to SearchEntry.
It's possible for Entry widget.
So I've tried to do something like this:
` let entry_field = gtk::Entry::new();

    // Create an EntryCompletion widget
    let completion_words = gtk::EntryCompletion::new();
    // Use the first (and only) column available to set the autocompletion text
    completion_words.set_text_column(0);
    // how many keystrokes to wait before attempting to autocomplete?
    completion_words.set_minimum_key_length(1);
    // whether the completions should be presented in a popup window
    completion_words.set_popup_completion(true);

    let list_model = create_list_model_for_completion();
    completion_words.set_model(Some(&list_model));
    entry_field.set_completion(Some(&completion_words));
    self.search_entry.set_key_capture_widget(Some(&entry_field));`

But it didn't work. It doesn't show any popup window with suggested words.