public yEdGraphEntityData(string id, ElementType @for, yEdDataType type)
 {
     Id    = id;
     _for  = @for;
     _type = type;
 }
 protected yEdGraphEntityData([NotNull] yEdGraphEntityData graphEntityData)
 {
     Id    = graphEntityData.Id;
     _for  = graphEntityData._for;
     _type = graphEntityData._type;
 }
 public static string Serialize(this yEdDataType yEdDataType) =>
 yEdDataType.ToString().ToLowerInvariant();