<PackageReference Include="NETStandard.Library" Version="2.0.0" />

System.ComponentModel.Design.Serialization.ContextStack

public sealed class ContextStack
namespace System.ComponentModel.Design.Serialization { public sealed class ContextStack { public object Current { get; } public object this[int level] { get; } public object this[Type type] { get; } public ContextStack(); public void Append(object context); public object Pop(); public void Push(object context); } }