'Access the assigned_add_ons
:returns: twilio.rest.api.v2010.account.incoming_phone_number.assigned_add_on.AssignedAddOnList
:rtype: twilio.rest.api.v2010.account.incoming_phone_number.assigned_add_on.AssignedAddOnList'

@property
def assigned_add_ons(self):

    if (self._assigned_add_ons is None):
        self._assigned_add_ons = AssignedAddOnList(self._version, account_sid=self._solution['account_sid'], resource_sid=self._solution['sid'])
    return self._assigned_add_ons
