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