code: def get_context_data(self, **kwargs):
          
          context = super(ScheduleXmlView, self).get_context_data(**kwargs)
          if self.request.GET.get('render_description', None) == '1':
              context['render_description'] = True
          else:
              context['render_description'] = False
          return context
docs: Allow adding a 'render_description' parameter