'宣言
Public Class _BuildInWaterfallOverlayDefinitionBuilderCollection Inherits GrapeCity.DataVisualization.Chart._BuildInObjectCollection(Of IWaterfallOverlayDefinitionBuilder)
public class _BuildInWaterfallOverlayDefinitionBuilderCollection : GrapeCity.DataVisualization.Chart._BuildInObjectCollection<IWaterfallOverlayDefinitionBuilder>