@Test
public void testGetPhenotypeMatchesForNonExistentHpoTermReturnsEmptySet() {

    PhenotypeTerm nonExistentTerm = PhenotypeTerm.of("", "");
    Set<PhenotypeMatch> matches = instance.getPhenotypeMatchesForHpoTerm(nonExistentTerm);
    assertThat(matches.isEmpty(), is(true));
}