code: def dispatch(self, request, *args, **kwargs):
          
          # add the storage engine to the current formwizard instance
          self.wizard_name = self.get_wizard_name()
          self.prefix = self.get_prefix()
          self.storage = get_storage(self.storage_name, self.prefix, request,
              getattr(self, 'file_storage', None))
          self.steps = StepsHelper(self)
          response = super(WizardView, self).dispatch(request, *args, **kwargs)
  
          # update the response (e.g. adding cookies)
          self.storage.update_response(response)
          return response
docs: This method gets called by the routing engine. The first argument is
          `request` which contains a `HttpRequest` instance.
          The request is stored in `self.request` for later use. The storage
          instance is stored in `self.storage`.
  
          After processing the request using the `dispatch` method, the
          response gets updated by the storage engine (for example add cookies).