code: def fetch(self):
          
          params = values.of({})
  
          payload = self._version.fetch(
              'GET',
              self._uri,
              params=params,
          )
  
          return StepContextInstance(
              self._version,
              payload,
              flow_sid=self._solution['flow_sid'],
              engagement_sid=self._solution['engagement_sid'],
              step_sid=self._solution['step_sid'],
          )
docs: Fetch a StepContextInstance
  
          :returns: Fetched StepContextInstance
          :rtype: twilio.rest.studio.v1.flow.engagement.step.step_context.StepContextInstance