ISchedulerPeriodic
using System.Runtime.CompilerServices;
namespace System.Reactive.Concurrency
{
[System.Runtime.CompilerServices.NullableContext(1)]
public interface ISchedulerPeriodic
{
IDisposable SchedulePeriodic<[System.Runtime.CompilerServices.Nullable(2)] TState>(TState state, TimeSpan period, Func<TState, TState> action);
}
}