You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: wgt_tabs.rs
    path of file: ./repos/CaptfEncoder/CaptfEncoder-V3/main/src/apps/widgets
    
    the code of the file until where you have to start completion: use std::str;
use std::sync::atomic::{AtomicI32, Ordering};
use std::sync::Arc;

use fltk::{
    app,
    button::*,
    enums::{Align, Color, Event, FrameType},
    group::*,
    image::*,
    prelude::*,
};

use crate::apps::AssetRes;

use crate::apps::message::Message;

#[allow(unused_parens)]
pub struct WgtTabButton {
    grp: Group,
    but: Button,
}

impl WgtTabButton {
    pub fn default() -> Self {

    
    pub fn default() -> Self {
        let mut grp = Group::new(0, 0, 120, 25, None);
        let mut but = Button::new(grp.x() + 110, grp.y(), 10, 10, None);
        let image_cl = AssetRes::get("icon/close_main.svg").unwrap();
        let image_cl = str::from_utf8(image_cl.data.as_ref()).unwrap();
        let mut image_cl = SvgImage::from_data(image_cl).unwrap();

        image_cl.scale(9, 9, true, true);
        but.set_image(Some(image_cl));
        but.set_frame(FrameType::NoBox);
        grp.end();
        grp.set_frame(FrameType::FlatBox);
        grp.set_label_size(12);

        Self { grp, but }
    }