https://help.syncfusion.com/cr/aspnetcore-js2/Syncfusion.EJ2.Charts.SparklineSparklineTooltipSettings.html
Class SparklineSparklineTooltipSettings - ASP.NETCore-EJ2 API Reference | Syncfusion
Class SparklineSparklineTooltipSettings - ASP.NETCore-EJ2 API Reference
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