code: def step_context(self):
          
          if self._step_context is None:
              self._step_context = StepContextList(
                  self._version,
                  flow_sid=self._solution['flow_sid'],
                  engagement_sid=self._solution['engagement_sid'],
                  step_sid=self._solution['sid'],
              )
          return self._step_context
docs: Access the step_context
  
          :returns: twilio.rest.studio.v1.flow.engagement.step.step_context.StepContextList
          :rtype: twilio.rest.studio.v1.flow.engagement.step.step_context.StepContextList