When using the NamedUrlFormWizard, we have to redirect to update the
        browser's URL to match the shown step.

def render_next_step(self, form, **kwargs):
        """
        When using the NamedUrlFormWizard, we have to redirect to update the
        browser's URL to match the shown step.
        """
        next_step = self.get_next_step()
        self.storage.current_step = next_step
        return redirect(self.url_name, step=next_step)