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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def delete(self, request, *args, **kwargs):
 """Override delete to only withdraw"""

        talk = self.get_object()
        talk.status = WITHDRAWN
        talk.save()
        revisions.set_user(self.request.user)
        revisions.set_comment("Talk Withdrawn")
        return HttpResponseRedirect(self.success_url)