<PackageReference Include="System.Reactive" Version="7.0.0-preview.16" />
System.Reactive.IEventPatternSource<TSender, TEventArgs>
namespace System.
Reactive
{
public interface IEventPatternSource<[
Nullable(
2)]
TSender, [
Nullable(
2)]
TEventArgs>
{
event TypedEventHandler<
TSender,
TEventArgs>
OnNext;
}
}