def __call__(self, sid):
return InstalledAddOnContext(self._version, sid=sid, )<EOL>
Constructs a InstalledAddOnContext

:param sid: The unique Installed Add-on Sid

:returns: twilio.rest.preview.marketplace.installed_add_on.InstalledAddOnContext
:rtype: twilio.rest.preview.marketplace.installed_add_on.InstalledAddOnContext