How to close sketch via api

What code do I need to add to close the current sketch?

Dim swApp As Object

Sub main()

'Private Sub cmd500_Click()

  Dim swApp As Object

  Dim Part As Object

  Dim SelMgr As Object

  Dim boolstatus As Boolean

  Set swApp = Application.SldWorks

  Set Part = swApp.ActiveDoc

  boolstatus = Part.Extension.SelectByID2("Front", "PLANE", 0, 0, 0, False, 0, Nothing, 0)

  Part.InsertSketch2 True

  Part.CreateCircleByRadius2 0, 0, 0, 0.07

  'Part.FeatureManager.FeatureExtrusion2 True, False, False, 0, 0, 0.5, 0, False, False, False, False, 0.01745, 0.01745, False, False, False, False,