@Override
    public Network network(String netId) {
        checkArgument(!Strings.isNullOrEmpty(netId), ERR_NULL_NETWORK_ID);
        return osNetworkStore.network(netId);
    }
@Test
    public void testGetNetworkById() {
        createBasicNetworks();
        assertTrue("Network did not match", target.network(NETWORK_ID) != null);
        assertTrue("Network did not match", target.network(UNKNOWN_ID) == null);
    }