def __call__(self, sid):
return EngagementContext(self._version, flow_sid=self._solution['<STR_LIT>'], sid=sid, )<EOL>
Constructs a EngagementContext

:param sid: Engagement Sid.

:returns: twilio.rest.studio.v1.flow.engagement.EngagementContext
:rtype: twilio.rest.studio.v1.flow.engagement.EngagementContext