System.Object
   GdPicture14.WEB.DocuViewareControl
   GdPicture14.WEB.DocuViewareControllerActionsHandler
   GdPicture14.WEB.DocuViewareEventsHandler
   GdPicture14.WEB.DocuViewareLicensing
   GdPicture14.WEB.DocuViewareManager
   System.EventArgs
      GdPicture14.WEB.BeforeRequestEventArgs
      GdPicture14.WEB.CustomActionEventArgs
      GdPicture14.WEB.LoadDocumentErrorEventArgs
      GdPicture14.WEB.NewDocumentLoadedEventArgs
      GdPicture14.WEB.PageTransferReadyEventArgs
   System.ValueType
      GdPicture14.WEB.DocuViewareMessage

Reference

DocuVieware Assembly (.NET Core 3.1)