'宣言
Public Class _TemplateAnnotation(Of T As IShapePrototype) Inherits _AnchoredPointAnnotation Implements IAnnotation, IBoxBounded, IQueryInterface, IRotatableAnnotation
public class _TemplateAnnotation<T> : _AnchoredPointAnnotation, IAnnotation, IBoxBounded, IQueryInterface, IRotatableAnnotation where T: IShapePrototype