if (comparator == null) {
      comparator = (Comparator<? super K>) NATURAL_ORDER;
    }
    return comparator;
  }

  @Override
  public boolean containsKey(Object key) {
    try {
      return delegate.containsKey(checkValid(key));
    } catch (NullPointerException | ClassCastException e) {
      return false;
    }
  }

  @Override
  public boolean containsValue(Object value) {

     *
     * @param originalRepository
     * @return true if external.
     */
    static boolean isExternalRepo(ArtifactRepository originalRepository) {
        try {
            URL url = new URL(originalRepository.getUrl());
            return !(isLocal(url.getHost()) || url.getProtocol().equals("file"));
        } catch (MalformedURLException e) {

    }

    @Nonnull
    @Override
    public Map<String, Object> getPluginContext(Project project) {
        requireNonNull(project, "project" + " cannot be null");
        try {
            MojoExecution mojoExecution = lookup.lookup(MojoExecution.class);
            MojoDescriptor mojoDescriptor = mojoExecution.getMojoDescriptor();

        Objects.requireNonNull(output, "output cannot be null");
        Objects.requireNonNull(toolchains, "toolchains cannot be null");

        try (Writer out = output) {
            new MavenToolchainsStaxWriter().write(out, toolchains.getDelegate());
        } catch (XMLStreamException e) {
            throw new IOException("Error writing toolchains", e);
        }

@app.get("/")
async def get():
    return HTMLResponse(html)


@app.websocket("/ws/{client_id}")
async def websocket_endpoint(websocket: WebSocket, client_id: int):
    await manager.connect(websocket)
    try:
        while True:
            data = await websocket.receive_text()
            await manager.send_personal_message(f"You wrote: {data}", websocket)
            await manager.broadcast(f"Client #{client_id} says: {data}")

import org.apache.maven.api.cli.Options;
import org.apache.maven.cling.invoker.BaseParser;

public class ShellParser extends BaseParser {
    @Override
    protected Options parseCliOptions(LocalContext context) {
        try {
            return CommonsCliShellOptions.parse(context.parserRequest.args().toArray(new String[0]));
        } catch (ParseException e) {

      return arbitraryConstantInstanceOrNull(type);
    }
    Constructor<T> constructor;
    try {
      constructor = type.getConstructor();
    } catch (NoSuchMethodException e) {
      return arbitraryConstantInstanceOrNull(type);
    }
    constructor.setAccessible(true); // accessibility check is too slow
    try {
      return constructor.newInstance();

	if IsDCOS() {
		universePkgVersion := env.Get("MARATHON_APP_LABEL_DCOS_PACKAGE_VERSION", "")
		// On DC/OS environment try to the get universe package version.
		if universePkgVersion != "" {
			uaAppend(" universe-", universePkgVersion)
		}
	}

	if IsKubernetes() {
		// In Kubernetes environment, try to fetch the helm package version
		helmChartVersion := getHelmVersion("/podinfo/labels")
		if helmChartVersion != "" {

    // initial map.get()
    when(backingMap.get(KEY)).thenReturn(null);
    // since get returned null, try a putIfAbsent; that fails due to a simulated race
    when(backingMap.putIfAbsent(eq(KEY), isA(AtomicInteger.class))).thenReturn(existingZero);
    // since the putIfAbsent returned a zero, we'll try to replace...
    when(backingMap.replace(eq(KEY), eq(existingZero), isA(AtomicInteger.class))).thenReturn(false);

  }

  private <T> void assertFailure(
      Class<T> interfaceType,
      Function<T, ? extends T> wrapperFunction,
      String... expectedMessages) {
    try {
      tester.testForwarding(interfaceType, wrapperFunction);
    } catch (AssertionFailedError expected) {
      for (String message : expectedMessages) {
        assertThat(expected).hasMessageThat().contains(message);