'宣言
Public Class _BezierShapeViewsBuilder(Of TPointView As ISymbolPointView) Inherits _LineShapeViewsBuilder(Of TPointView) Implements ILineShapeViewsBuilder
public class _BezierShapeViewsBuilder<TPointView> : _LineShapeViewsBuilder<TPointView>, ILineShapeViewsBuilder where TPointView: ISymbolPointView