}

  private void memoizeExceptionThrownTest(ThrowingSupplier throwingSupplier) {
    Supplier<Integer> memoizedSupplier = Suppliers.memoize(throwingSupplier);
    // call get() twice to make sure that memoization doesn't interfere
    // with throwing the exception
    for (int i = 0; i < 2; i++) {
      try {
        memoizedSupplier.get();

  }

  // TODO: IdentityHashMap, AbstractMap

  private static Map<String, String> toHashMap(Entry<String, String>[] entries) {
    return populate(new HashMap<String, String>(), entries);
  }

  // TODO: call conversion constructors or factory methods instead of using
  // populate() on an empty map
  private static <T, M extends Map<T, String>> M populate(M map, Entry<T, String>[] entries) {
    for (Entry<T, String> entry : entries) {

  }

  private void memoizeExceptionThrownTest(ThrowingSupplier throwingSupplier) {
    Supplier<Integer> memoizedSupplier = Suppliers.memoize(throwingSupplier);
    // call get() twice to make sure that memoization doesn't interfere
    // with throwing the exception
    for (int i = 0; i < 2; i++) {
      try {
        memoizedSupplier.get();

    Set<EndpointPair<Integer>> n2IncidentEdges = graph.incidentEdges(N2);
    assertThat(graphAsMutableGraph.removeNode(N1)).isTrue();

    // The choice of the size() method to call here is arbitrary.  We assume that if any of the Set
    // methods executes the validation check, they all will, and thus we only need to test one of

            RequestOptionCall<IndexRequestBuilder> entityCall) {
        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<BadWord> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<BadWord> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

        return batchUpdate(list, call, null);
    }

    public int[] batchUpdate(List<FileAuthentication> list, RequestOptionCall<BulkRequestBuilder> call,
            RequestOptionCall<IndexRequestBuilder> entityCall) {
        return doBatchUpdate(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchDelete(List<FileAuthentication> list) {
        return batchDelete(list, null, null);
    }

            RequestOptionCall<IndexRequestBuilder> entityCall) {
        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<KeyMatch> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<KeyMatch> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

        return batchDelete(list, call, null);
    }

    public int[] batchDelete(List<RequestHeader> list, RequestOptionCall<BulkRequestBuilder> call,
            RequestOptionCall<IndexRequestBuilder> entityCall) {
        return doBatchDelete(new BulkList<>(list, call, entityCall), null);
    }

    // #pending create, modify, remove

        return batchDelete(list, call, null);
    }

    public int[] batchDelete(List<DuplicateHost> list, RequestOptionCall<BulkRequestBuilder> call,
            RequestOptionCall<IndexRequestBuilder> entityCall) {
        return doBatchDelete(new BulkList<>(list, call, entityCall), null);
    }

    // #pending create, modify, remove

    assertEquals("google.com", InternetDomainName.from("www.google.com").parent().toString());

    try {
      InternetDomainName.from("com").parent();
      fail("'com' should throw ISE on .parent() call");
    } catch (IllegalStateException expected) {
    }
  }

  public void testChild() {
    InternetDomainName domain = InternetDomainName.from("foo.com");