ISchedulerLongRunning
Scheduler with support for starting long-running tasks.
            This type of scheduler can be used to run loops more efficiently instead of using recursive scheduling.
            
                using System.Reactive.Disposables;
using System.Runtime.CompilerServices;
namespace System.Reactive.Concurrency
{
    [System.Runtime.CompilerServices.NullableContext(1)]
    public interface ISchedulerLongRunning
    {
        IDisposable ScheduleLongRunning<[System.Runtime.CompilerServices.Nullable(2)] TState>(TState state, Action<TState, ICancelable> action);
    }
}