UNSAFE_componentWillMount() {}
        UNSAFE_componentWillUpdate() {}
        UNSAFE_componentWillReceiveProps() {}
        render() {
          return (
            <React.unstable_AsyncMode>
              <AsyncRoot />
            </React.unstable_AsyncMode>
          );
        }
      }
      class AsyncRoot extends React.Component {
        UNSAFE_componentWillMount() {}
        UNSAFE_componentWillUpdate() {}
        render() {
          return <Parent />;
        }
      }
      class Parent extends React.Component {
        componentWillMount() {}
        componentWillUpdate() {}
        componentWillReceiveProps() {}
        render() {
          return <Child />;
        }
      }
      class Child extends React.Component {