'宣言
Public Class _SankeyNodeLabelOverlayDefinition Inherits GrapeCity.DataVisualization.Chart._BaseOverlayDefinition(Of IPlotConfigTextOption) Implements IOverlayDefinition, IQueryInterface, ISankeyNodeLabelOverlayDefinition
public class _SankeyNodeLabelOverlayDefinition : GrapeCity.DataVisualization.Chart._BaseOverlayDefinition<IPlotConfigTextOption>, IOverlayDefinition, IQueryInterface, ISankeyNodeLabelOverlayDefinition