def __getitem__(self,name):
        item=self.getField(name)
        if item: return item.getValue()
        raise IndexError('No such field')
Like L{test_lookupAddressNotFound}, but for
dataset/ETHPy150Open CouchPotato/CouchPotatoServer/libs/xmpp/protocol.py/DataReported.__getitem__--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/names/test/test_hosts.py/HostsTestCase.test_lookupAllRecordsNotFound