LaboratoryProtection/Assets/PMaker/Task/NewBehaviourScript.cs

using Cysharp.Threading.Tasks;

using System.Threading;

public static class CancellationTokenSourceExtension 
{
    public static void AddTo(this CancellationTokenSource cancellationTokenSource, CancellationToken cancellationToken)
    {
        UniTask.Create(async () => {
            await UniTask.WaitUntilCanceled(cancellationToken);
            cancellationTokenSource.Cancel();
        }).Forget();
    }
}