<PackageReference Include="System.Reactive" Version="6.0.1" />

IScheduledItem<TAbsolute>

public interface IScheduledItem<TAbsolute>
using System.Runtime.CompilerServices; namespace System.Reactive.Concurrency { [System.Runtime.CompilerServices.NullableContext(1)] public interface IScheduledItem<[System.Runtime.CompilerServices.Nullable(2)] TAbsolute> { TAbsolute DueTime { get; } void Invoke(); } }