code: def get_historical_output(self, assessment, options):
          
          responseFormat=None
          if options and 'format' in options and options['format'] is not None:
              responseFormat = options['format']
              options['format'] = None
  
          url = '/assessment/' + str(assessment) + '/output?' + urllib.parse.urlencode(options)
          response = self.http.downstream(url, responseFormat)
          return response
docs: To get output of a historical Assessment
          :param assessment: string
          :param options: dict