<PackageReference Include="System.Text.Json" Version="11.0.0-preview.1.26104.118" />

System.Text.Json.Serialization.ReferenceResolver

public abstract class ReferenceResolver
namespace System.Text.Json.Serialization { public abstract class ReferenceResolver { public abstract void AddReference(string referenceId, object value); public abstract string GetReference(object value, out bool alreadyExists); public abstract object ResolveReference(string referenceId); protected ReferenceResolver(); } }