code: def fetch(self):
          
          params = values.of({})
  
          payload = self._version.fetch(
              'GET',
              self._uri,
              params=params,
          )
  
          return StyleSheetInstance(self._version, payload, assistant_sid=self._solution['assistant_sid'], )
docs: Fetch a StyleSheetInstance
  
          :returns: Fetched StyleSheetInstance
          :rtype: twilio.rest.autopilot.v1.assistant.style_sheet.StyleSheetInstance