@Test
public void testSampleGenotypes() {

    Map<String, SampleGenotype> sampleGenotypes = ImmutableMap.of("Zaphod", SampleGenotype.of(AlleleCall.REF, AlleleCall.ALT));
    instance = testVariantBuilder()
            .sampleGenotypes(sampleGenotypes)
            .build();
    assertThat(instance.getSampleGenotypes(), equalTo(sampleGenotypes));
}