@property<EOL><INDENT>def available_add_ons(self):<DEDENT>
if self._available_add_ons is None:<EOL><INDENT>self._available_add_ons = AvailableAddOnList(self)<EOL><DEDENT>return self._available_add_ons<EOL>
:rtype: twilio.rest.preview.marketplace.available_add_on.AvailableAddOnList