ISchedulerLongRunning
using System.Reactive.Disposables;
using System.Runtime.CompilerServices;
namespace System.Reactive.Concurrency
{
[NullableContext(1)]
public interface ISchedulerLongRunning
{
IDisposable ScheduleLongRunning<[Nullable(2)] TState>(TState state, Action<TState, ICancelable> action);
}
}