namespace System.Reactive.Concurrency { public sealed class TaskPoolScheduler : LocalScheduler, ISchedulerLongRunning, ISchedulerPeriodic { public static TaskPoolScheduler Default { get; } public TaskPoolScheduler(TaskFactory taskFactory); public IDisposable ScheduleLongRunning<[System.Runtime.CompilerServices.Nullable(2)] TState>(TState state, Action<TState, ICancelable> action); public IDisposable SchedulePeriodic<[System.Runtime.CompilerServices.Nullable(2)] TState>(TState state, TimeSpan period, Func<TState, TState> action); } }