Question: how to manually restart the simulation? about react-vis-force HOT 3 OPEN

class App extends Component {
    constructor(props) {
        super(props);
        var links = [
                {"source": "first-node", "target": "second-node"},
                {"source": "third-node", "target": "second-node"},
        ]
        var tasks = [
            {"id": "first-node", "fill": "red"},
            {"id": "second-node", "fill": "blue"},
            {"id": "third-node", "fill": "blue"},
        ]
        this.state = {
            tasks: tasks,
            links: links
        }
    }
    render() {
            function md(r, task) {
                this.setState((prevState) => ({

                    tasks: prevState.tasks.filter((t) => t !== task),
                    links: prevState.links.filter((l) => l.source !== task.id && l.target !== task.id)

                }));
            }
            var md = md.bind(this)
            var tasks = this.state.tasks.map((task) => {
                    return (<ForceGraphNode key={task.id} node={{ id: task.id }} fill={task.fill} onMouseDown={(r) => md(r, task)} />)
            });
            var links = this.state.links.map((link) => {
                    return (<ForceGraphLink key={link.source + '..' + link.target} link={link} />)
            });
            return (<ForceGraph simulationOptions={{ height: 300, width: 300 }}>
                      {tasks}
                      {links}
                    </ForceGraph>)
    }
}

class FG extends ForceGraph {
        componentDidUpdate(prevProps, prevState) {
                var prevNodes = prevProps.children[0].map((c) => c.key);
                var prevLinks = prevProps.children[1].map((c) => c.key);
                var nodes = this.props.children[0].map((c) => c.key);
                var links = this.props.children[1].map((c) => c.key);
                if (!(isEqual(prevNodes, nodes) && isEqual(prevLinks, links))) {
                  console.log("diff!")
                  this.simulation.alpha(1).restart();
                }
        }
}