'Initialize the AvailableAddOnExtensionList
:param Version version: Version that contains the resource
:param available_add_on_sid: The available_add_on_sid
:returns: twilio.rest.preview.marketplace.available_add_on.available_add_on_extension.AvailableAddOnExtensionList
:rtype: twilio.rest.preview.marketplace.available_add_on.available_add_on_extension.AvailableAddOnExtensionList'

def __init__(self, version, available_add_on_sid):

    super(AvailableAddOnExtensionList, self).__init__(version)
    self._solution = {'available_add_on_sid': available_add_on_sid}
    self._uri = '/AvailableAddOns/{available_add_on_sid}/Extensions'.format(**self._solution)
