@Test(dataProvider = "UsingAD")
 public void testUsingAD(final VariantContext vc, final double expectedQD) {
   final Map<String, Object> annotatedMap =
       new QualByDepth().annotate(null, null, null, null, vc, null);
   Assert.assertNotNull(annotatedMap, vc.toString());
   final String QD = (String) annotatedMap.get("QD");
   Assert.assertEquals(Double.valueOf(QD), expectedQD, 0.0001);
 }