'Fetch a AssignedAddOnExtensionInstance
:returns: Fetched AssignedAddOnExtensionInstance
:rtype: twilio.rest.api.v2010.account.incoming_phone_number.assigned_add_on.assigned_add_on_extension.AssignedAddOnExtensionInstance'

def fetch(self):

    params = values.of({})
    payload = self._version.fetch('GET', self._uri, params=params)
    return AssignedAddOnExtensionInstance(self._version, payload, account_sid=self._solution['account_sid'], resource_sid=self._solution['resource_sid'], assigned_add_on_sid=self._solution['assigned_add_on_sid'], sid=self._solution['sid'])
