public static ParcelDto AsDto(this ParcelDocument document)
 => new ParcelDto
 {
     Id          = document.Id,
     CustomerId  = document.CustomerId,
     Variant     = document.Variant.ToString().ToLowerInvariant(),
     Size        = document.Size.ToString().ToLowerInvariant(),
     Name        = document.Name,
     Description = document.Description,
     CreatedAt   = document.CreatedAt,
     OrderId     = document.OrderId,
 };
 public static Parcel AsEntity(this ParcelDocument document)
 => new Parcel(document.Id, document.CustomerId, document.Variant, document.Size, document.Name,
               document.Description, document.CreatedAt, document.OrderId);