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// For complete examples and data files, please go to https://github.com/groupdocs-viewer/GroupDocs.Viewer-for-.NET
' Setup GroupDocs.Viewer config
Dim config As ViewerConfig = Utilities.GetConfigurations()

' Init viewer image or html handler
Dim viewerImageHandler As New ViewerImageHandler(config)

'Clear files from cache older than specified time interval 
viewerImageHandler.ClearCache(OlderThanDays)