<PackageReference Include="NETStandard.Library" Version="2.0.1" />

System.ComponentModel.MarshalByValueComponent

namespace System.ComponentModel { public class MarshalByValueComponent : IComponent, IDisposable, IServiceProvider { public virtual IContainer Container { get; } public virtual bool DesignMode { get; } protected EventHandlerList Events { get; } public virtual ISite Site { get; set; } public event EventHandler Disposed; public MarshalByValueComponent(); public void Dispose(); protected virtual void Dispose(bool disposing); public virtual object GetService(Type service); } }