def redraw(self) -> None:
        """
        Redraw the scene. Do not recompute any items in the view.

        :return:    None
        """
        scene = self.scene()
        if scene is not None:
            scene.update(self.sceneRect())

        Redraw the scene. Do not recompute any items in the view.

        :return:    None
        
angrmanagement/ui/widgets/qgraph.py