TessaViewModelId - свойство

[DataMemberAttribute]
public Guid Id { get; set; }

<DataMemberAttribute>
Public Property Id As Guid
	Get
	Set

public:
[DataMemberAttribute]
property Guid Id {
	Guid get ();
	void set (Guid value);
}

[<DataMemberAttribute>]
member Id : Guid with get, set