def unknown_service(request, username=None, id_string=None):
    r = HttpResponse(u"Unknown SMS Gateway Service", content_type='text/plain')
    r.status_code = 400
    return r
Returns the data object from the table's dataset which matches
dataset/ETHPy150Open kobotoolbox/kobocat/onadata/apps/sms_support/providers/__init__.py/unknown_service--crossover with--dataset/ETHPy150Open CiscoSystems/avos/horizon/tables/base.py/DataTable.get_object_by_id