<PackageReference Include="System.Text.Json" Version="11.0.0-preview.3.26207.106" />

System.Text.Json.Serialization.ReferenceHandler

public abstract class ReferenceHandler
namespace System.Text.Json.Serialization { public abstract class ReferenceHandler { public static ReferenceHandler Preserve { get; } public static ReferenceHandler IgnoreCycles { get; } public abstract ReferenceResolver CreateResolver(); protected ReferenceHandler(); } } namespace System.Collections.Generic { }