Transforming own type into ProblemDetails

public class ProblemResponse<T>
{
    public required string Type { get; init; }
    public required int Status { get; init; }
    public required string Title { get; init; }
    public required string Detail { get; init; }
    public required string UriPath { get; init; }
    public required string Method { get; init; }
    public required T? Extensions { get; init; }
}

public class ProblemDetails {
  public string? Type { get; set; }
  public string? Title { get; set; }
  public int? Status { get; set; }
  public string? Detail { get; set; }
  public string? Instance { get; set; }
  [JsonExtensionData]
  public IDictionary<string, object?> Extensions { get; set; }
}