'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'

def __call__(self, sid):

    return InstalledAddOnContext(self._version, sid=sid)
