### Question:
OfFlowPresenceVerifier { public List<OFFlowMod> getMissing() { return expectedOfFlows.values().stream() .flatMap(Collection::stream) .collect(Collectors.toList()); } OfFlowPresenceVerifier(
            IOfFlowDumpProducer dumpProducer, List<OFFlowMod> expectedFlows, Set<SwitchFeature> switchFeatures); List<OFFlowMod> getMissing();  }### Answer:
@Test public void inaccurateSetFieldVlanVidActionNegative() { OfFlowPresenceVerifier presenceVerifier = testInaccurateSetFieldVlanVidAction(Collections.emptySet()); Assert.assertFalse(presenceVerifier.getMissing().isEmpty()); }
@Test public void inaccurateSetFieldVlanVidActionPositive() { OfFlowPresenceVerifier presenceVerifier = testInaccurateSetFieldVlanVidAction(Collections.singleton( SwitchFeature.INACCURATE_SET_VLAN_VID_ACTION)); Assert.assertTrue(presenceVerifier.getMissing().isEmpty()); }