'宣言
Public Class _SankeyXyPlotDefinition Inherits _SankeyPlotDefinition Implements IPlotDefinition, IQueryInterface, ISankeyPlotDefinition, ISankeyXyPlotDefinition
public class _SankeyXyPlotDefinition : _SankeyPlotDefinition, IPlotDefinition, IQueryInterface, ISankeyPlotDefinition, ISankeyXyPlotDefinition