<PackageReference Include="NETStandard.Library" Version="2.0.2" />

System.Diagnostics.DebuggerDisplayAttribute

public sealed class DebuggerDisplayAttribute : Attribute
namespace System.Diagnostics { public sealed class DebuggerDisplayAttribute : Attribute { public string Name { get; set; } public Type Target { get; set; } public string TargetTypeName { get; set; } public string Type { get; set; } public string Value { get; } public DebuggerDisplayAttribute(string value); } }