@Test
public void testObservationOnIce() throws Exception {

    Observation obs = FhirDevice.createObservation(rosetta.MDC_CO2_RESP_RATE.VALUE, Math.random(), new Date());
    FhirDevice.ObservationConverter converter = new FhirDevice.ObservationConverter() {
        AbstractDevice.InstanceHolder<Numeric> getInstanceHolderForCode(String code) {
            return null;
        }
    };
    FhirDevice.ObservationConverter.NumericObservation ice = converter.observationOnIce(obs);
    Assert.assertNotNull("Failed to convert observation to ice", ice);
}