using System.ComponentModel.DataAnnotations; namespace RobotApp.VDA5050.Factsheet; public class PolygonPoints { [Required] public double X { get; set; } [Required] public double Y { get; set; } } public class Envelopes2d { [Required] public string Set { get; set; } = string.Empty; [Required] public PolygonPoints[] PolygonPoints { get; set; } = []; public string Description { get; set; } = string.Empty; }