@Test
    void testValidateUniqueServerId() throws Exception {
        Settings settings = new Settings();
        Server server1 = new Server();
        server1.setId("test");
        settings.addServer(server1);
        Server server2 = new Server();
        server2.setId("test");
        settings.addServer(server2);

        SimpleProblemCollector problems = new SimpleProblemCollector();

        if (repositories != null) {
            Map<String, Server> serversById = new HashMap<>();

            if (servers != null) {
                for (Server server : servers) {
                    if (!serversById.containsKey(server.getId())) {
                        serversById.put(server.getId(), server);
                    }
                }

    state = State.CANCELLED;
    notifyAndClearListeners();

    if (delegate != null) {
      // TODO(lukes): consider adding the StackOverflowError protection from the server version
      delegate.cancel(mayInterruptIfRunning);
    }

    return true;
  }

  protected void interruptTask() {}

  @Override
  public boolean isCancelled() {

    private static final String JAVA_EXECUTABLE_PATTERN_STR = "java(?:\\.exe)?";
    private static final String GRADLE_MAIN_CLASS_PATTERN_STR = "(org\\.gradle\\.[a-zA-Z]+)";
    private static final String PLAY_SERVER_PATTERN_STR = "(play\\.core\\.server\\.NettyServer)";
    private static final String JAVA_PROCESS_STACK_TRACES_MONITOR_PATTERN_STR = "(JavaProcessStackTracesMonitor\\.java)";
    private static ExecutionMode executionMode;

   * 4380</a>.
   *
   * @since 5.0
   */
  public static final class TeredoInfo {
    private final Inet4Address server;
    private final Inet4Address client;
    private final int port;
    private final int flags;

    /**
     * Constructs a TeredoInfo instance.
     *
     * <p>Both server and client can be {@code null}, in which case the value {@code "0.0.0.0"} will
     * be assumed.
     *

            // of the form:
            //
            // mvn remote-resources:process
            //
            // From the metadata stored on the server which has been created as part of a standard
            // Maven plugin deployment we will find the right PluginDescriptor from the remote
            // repository.

    assertTrue(InetAddresses.isTeredoAddress((Inet6Address) ip));
    InetAddresses.TeredoInfo teredo = InetAddresses.getTeredoInfo((Inet6Address) ip);

    InetAddress server = InetAddresses.forString(serverStr);
    assertEquals(server, teredo.getServer());

    InetAddress client = InetAddresses.forString(clientStr);
    assertEquals(client, teredo.getClient());

    assertEquals(port, teredo.getPort());

    public static final String ERRORS_document_not_found = "{errors.document_not_found}";

    /** The key of the message: Could not load from this server: {0} */
    public static final String ERRORS_not_load_from_server = "{errors.not_load_from_server}";

    /** The key of the message: Failed to start job {0}. */
    public static final String ERRORS_failed_to_start_job = "{errors.failed_to_start_job}";

       * fastest (more than twice as fast as the Java implementation, vs ~1.5x with non-final static
       * fields, on x86_32) under the Hotspot server compiler. The reason is obviously that the
       * non-final fields need to be reloaded inside the loop.
       *
       * And, no, defining (final or not) local variables out of the loop still isn't as good

          "www",
          "abc.a23",
          "biz.com.ua",
          "x",
          "fOo",
          "f--o",
          "f_a",
          "foo.net.us\uFF61ocm",
          "woo.com.",
          "8server.shop",
          "123.cn",
          "a" + DELTA + "b.com",
          ALMOST_TOO_MANY_LEVELS,
          ALMOST_TOO_LONG);

  private static final ImmutableSet<String> INVALID_NAME =
      ImmutableSet.of(