Pedigree { @JsonIgnore public boolean containsId(String id) { return individualsById.containsKey(id); } private  Pedigree(Collection<Individual> individuals); static Pedigree of(Collection<Individual> individuals); static Pedigree of(Individual... individuals); static Pedigree justProband(String id); static Pedigree empty(); @JsonIgnore boolean containsId(String id); @JsonIgnore Individual getIndividualById(String individualId); Set<Individual> getIndividuals(); @JsonIgnore Set<String> getIdentifiers(); @JsonIgnore int size(); @JsonIgnore boolean isEmpty(); @JsonIgnore int numFamilies(); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString();  }
@Test public void testContainsId() { Pedigree instance = Pedigree.justProband("Nemo"); assertThat(instance.containsId("Nemo"), is(true)); assertThat(instance.containsId("Someone"), is(false)); }