For example:
<img width="1904" alt="Screen Shot 2021-11-05 at 11 59 05 AM" src="https://user-images.githubusercontent.com/29597/140540816-25d6d47b-7aea-4121-aeaa-565accc65b1f.png">

const [didMount, setDidMount] = React.useState(false);
          Scheduler.unstable_yieldValue(
            `Component ${didMount ? 'update' : 'mount'}`,
          );
          
          startTime += 20000;
          React.useLayoutEffect(() => {
            setDidMount(true);
          }, []);
          return didMount;
        }
        if (gate(flags => flags.enableSchedulingProfiler)) {
          const cpuProfilerSample = creactCpuProfilerSample();
          const root = ReactDOM.createRoot(document.createElement('div'));
          act(() => {
            root.render(<Component />);
          });
          expect(Scheduler).toHaveYielded([
            'Component mount',
            'Component update',
          ]);
          const testMarks = [];