V v = ((TestMapGenerator<K, V>) mapGenerator.getInnerGenerator()).samples().e0().getValue();
      List<Entry<K, V>> entries = new ArrayList<>();
      for (K element : insertionOrder) {
        entries.add(mapEntry(element, v));
      }

      List<K> keys = new ArrayList<>();
      for (Entry<K, V> entry : mapGenerator.order(entries)) {
        keys.add(entry.getKey());
      }
      return keys;
    }

        c = new ArrayList<String>();
        assertThat(CollectionsUtil.isEmpty(c), is(true));
    }

    /**
     * Test method for
     * {@link org.codelibs.core.collection.CollectionsUtil#isNotEmpty(java.util.Collection)}
     * .
     */
    @Test
    public void testIsNotEmptyCollectionOfQ() {
        final Collection<String> c = new ArrayList<String>();
        c.add("hoge");

  public void testForEachUnknownOrder() {
    List<E> elements = new ArrayList<>();
    collection.forEach(elements::add);
    assertEqualIgnoringOrder(asList(createSamplesArray()), elements);
  }

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testForEachKnownOrder() {
    List<E> elements = new ArrayList<>();
    collection.forEach(elements::add);
    List<E> expected = copyToList(getOrderedElements());

    List<MetadataGraphNode> inNodes;

    /** nodes, exident to this (I depend on) */
    List<MetadataGraphNode> exNodes;

    public MetadataGraphNode() {
        inNodes = new ArrayList<>(4);
        exNodes = new ArrayList<>(8);
    }

    public MetadataGraphNode(MavenArtifactMetadata metadata) {
        this();
        this.metadata = metadata;
    }

    private final List<String> imports = new ArrayList<String>();
    private final List<String> interfaceNames = new ArrayList<String>();
    private final Map<String, PropertyMetaData> declaredProperties = new HashMap<String, PropertyMetaData>();
    private final Set<MethodMetaData> declaredMethods = new HashSet<MethodMetaData>();
    private final List<String> innerClassNames = new ArrayList<String>();
    private String outerClassName;

        }

        List<ClassRealm> extensionRealms = new ArrayList<>();

        Map<ClassRealm, List<String>> exportedPackages = new HashMap<>();

        Map<ClassRealm, List<String>> exportedArtifacts = new HashMap<>();

        List<Artifact> publicArtifacts = new ArrayList<>();

        for (Plugin plugin : extensionPlugins) {

    List<Integer> list = new ArrayList<>();
    Collection<List<Integer>> permutationSet = Collections2.orderedPermutations(list);

    assertEquals(1, permutationSet.size());
    assertThat(permutationSet).contains(list);

    Iterator<List<Integer>> permutations = permutationSet.iterator();

    assertNextPermutation(new ArrayList<>(), permutations);
    assertNoMorePermutations(permutations);

            versions.addAll(versioning.getVersions());
            versioning.setVersions(new ArrayList<>(versions));
        }

        // just carry-on as-is
        if (!recessive.getPlugins().isEmpty()) {
            metadata.setPlugins(new ArrayList<>(recessive.getPlugins()));
        }
    }

    public Object getKey() {
        return getGroupId() + ':' + getArtifactId();
    }

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testReplaceValuesWithEmpty() {
    int size = multimap().size();
    List<V> oldValues = new ArrayList<>(multimap().get(k0()));
    List<V> values = emptyList();
    assertEquals(oldValues, new ArrayList<V>(multimap().replaceValues(k0(), values)));
    assertGet(k0());
    assertEquals(size - oldValues.size(), multimap().size());
  }

    public static List<CIInfo> detectCI() {
        ArrayList<CIInfo> result = ServiceLoader.load(CIDetector.class).stream()
                .map(ServiceLoader.Provider::get)
                .map(CIDetector::detectCI)
                .filter(Optional::isPresent)
                .map(Optional::get)
                .collect(Collectors.toCollection(ArrayList::new));

        if (result.size() > 1) {
            // remove generic