def init_widget(self):
        """ Initialize the underlying widget.

        """
        super(AndroidDrawerLayout, self).init_widget()
        d = self.declaration
        if d.title:
            self.set_title(d.title)
        if d.drawer_elevation:
            self.set_drawer_elevation(d.drawer_elevation)
        if d.lock_mode:
            self.set_lock_mode(d.lock_mode)
        if d.scrim_color:
            self.set_scrim_color(d.scrim_color)
        if d.status_bar_background_color:
            self.set_status_bar_background_color(d.status_bar_background_color)
Initialize the underlying widget.