'Initialize the AvailableAddOnInstance
:returns: twilio.rest.preview.marketplace.available_add_on.AvailableAddOnInstance
:rtype: twilio.rest.preview.marketplace.available_add_on.AvailableAddOnInstance'

def __init__(self, version, payload, sid=None):

    super(AvailableAddOnInstance, self).__init__(version)
    self._properties = {'sid': payload['sid'], 'friendly_name': payload['friendly_name'], 'description': payload['description'], 'pricing_type': payload['pricing_type'], 'configuration_schema': payload['configuration_schema'], 'url': payload['url'], 'links': payload['links']}
    self._context = None
    self._solution = {'sid': (sid or self._properties['sid'])}
