public class MultimapKeySetTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
  public void testKeySet() {
    for (Entry<K, V> entry : getSampleElements()) {
      assertTrue(multimap().keySet().contains(entry.getKey()));
    }
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(ALLOWS_NULL_KEYS)
  public void testKeySetContainsNullKeyPresent() {
    initMultimapWithNullKey();

  @Override
  protected void assertMoreInvariants(Map<K, V> map) {
    // TODO: can these be moved to MapInterfaceTest?
    for (Entry<K, V> entry : map.entrySet()) {
      assertThat(entry.toString()).isEqualTo(entry.getKey() + "=" + entry.getValue());
    }

    assertThat(map.toString()).isEqualTo("{" + JOINER.join(map.entrySet()) + "}");
    assertThat(map.entrySet().toString()).isEqualTo("[" + JOINER.join(map.entrySet()) + "]");

            return Collections.emptyMap();
        }

        Map<String, String> phases = new LinkedHashMap<>();
        for (Map.Entry<String, LifecyclePhase> e : lifecyclePhases.entrySet()) {
            phases.put(e.getKey(), e.getValue().toString());
        }
        return phases;
    }

        Map<String, String> map = new HashMap<String, String>();
        map.put("key1", "value1");
        map.put("key2", "value2");
        StreamUtil.stream(map).of(s -> s.forEach(m -> assertEquals(map.get(m.getKey()), m.getValue())));
    }

    assertThat(entry.getKey()).isEqualTo("Hello");
    assertThat(entry.getValue()).isEqualTo("World");
    assertTrue(iter.hasNext());

    entry = iter.next();
    assertThat(entry.getKey()).isEqualTo("first");
    assertThat(entry.getValue()).isEqualTo("second");
    assertTrue(iter.hasNext());

    entry = iter.next();
    assertThat(entry.getKey()).isEqualTo("polygene");

        request.getParameterMap().entrySet().stream().forEach(entry -> {
            if (entry.getValue().length > 1) {
                curlRequest.param(entry.getKey(), String.join(",", entry.getValue()));
            } else if (entry.getValue().length == 1) {
                curlRequest.param(entry.getKey(), entry.getValue()[0]);
            }
        });
        try (final CurlResponse curlResponse = curlRequest.onConnect((req, con) -> {

            final String key = LaFunctions.u(e.getKey());
            stream(e.getValue()).of(stream -> stream.filter(StringUtil::isNotBlank)
                    .forEach(s -> pagingQueryList.add("fields." + key + "=" + LaFunctions.u(s))));
        });
        form.as.entrySet().stream().filter(e -> e.getValue() != null).forEach(e -> {
            final String key = LaFunctions.u(e.getKey());

                    Map<String, String> map = new LinkedHashMap<>();
                    for (Entry<String, String> entry : entries) {
                      map.put(entry.getKey(), entry.getValue());
                    }
                    return new StandardImplForwardingMap<>(map);
                  }
                })

                    .entrySet()
                    .stream()
                    .filter(entry -> enableFilter == false || extension.isServiceRequired(entry.getKey(), fixtureProject.getPath()))
                    .forEach(entry -> {
                        String service = entry.getKey();
                        ServiceInfo infos = entry.getValue();
                        infos.getTcpPorts().forEach((container, host) -> {

        System.out.println("Active test descriptors:");
        for (Map.Entry<Object, TestDescriptorInternal> entry : activeDescriptorsById.entrySet()) {
            System.out.println("id= " + entry.getKey() + " -- " + entry.getValue().getDisplayName());
        }
        illegalArgumentException.printStackTrace();
    }

    public void reset() {
        this.activeDescriptorsById.clear();