pub unsafe extern "C" fn gtk_font_dialog_choose_font_and_features_finish(
    self_: *mut GtkFontDialog,
    result: *mut GAsyncResult,
    font_desc: *mut *mut PangoFontDescription,
    font_features: *mut *mut c_char,
    language: *mut *mut PangoLanguage,
    error: *mut *mut GError
) -> gboolean
Available on crate feature v4_10 only.