'Constructs a AvailableAddOnContext
:param sid: The unique Available Add-on Sid
:returns: twilio.rest.preview.marketplace.available_add_on.AvailableAddOnContext
:rtype: twilio.rest.preview.marketplace.available_add_on.AvailableAddOnContext'

def __call__(self, sid):

    return AvailableAddOnContext(self._version, sid=sid)
