*
   * @return {@code first} if it is non-null; otherwise {@code second} if it is non-null
   * @throws NullPointerException if both {@code first} and {@code second} are null
   * @since 18.0 (since 3.0 as {@code Objects.firstNonNull()}).
   */
  public static <T> T firstNonNull(@Nullable T first, @Nullable T second) {
    if (first != null) {
      return first;
    }
    if (second != null) {
      return second;
    }

        .build(),
    )
    val source = newEventSource()
    assertThat(source.request().url.encodedPath).isEqualTo("/")
    listener.assertOpen()
    listener.assertEvent(null, null, "hey")
    listener.assertClose()
  }

  @RetryingTest(5)
  fun cancelInEventShortCircuits() {
    server.enqueue(
      MockResponse
        .Builder()
        .body(
          """

    var exception: String? = null
    if (wildcardMatch != null) {
      for (labelIndex in 0 until domainLabelsUtf8Bytes.size - 1) {
        val rule =
          publicSuffixList.exceptionBytes.binarySearch(
            domainLabelsUtf8Bytes,
            labelIndex,
          )
        if (rule != null) {
          exception = rule
          break
        }
      }

     */
    @Nonnull
    ProjectBuilderResult build(ProjectBuilderRequest request) throws ProjectBuilderException;

    /**
     * Creates a {@link org.apache.maven.api.Project} from a POM file.
     *
     * @param session the {@link Session}, must not be {@code null}
     * @param source The {@link Source}, must not be {@code null}

        int exitCode = new MavenUpCling().run(args, null, null, null, false);
        System.exit(exitCode);
    }

    /**
     * ClassWorld Launcher "enhanced" entry point: returning exitCode and accepts Class World.
     */
    public static int main(String[] args, ClassWorld world) throws IOException {
        return new MavenUpCling(world).run(args, null, null, null, false);
    }

    /**

    protected final List<MojoExecution> executions = Collections.synchronizedList(new ArrayList<>());

    public MojoExecutorStub() {
        super(null, null, null, null, null, null);
    }

    public MojoExecutorStub(
            BuildPluginManager pluginManager,
            MavenPluginManager mavenPluginManager,
            LifecycleDependencyResolver lifeCycleDependencyResolver,

                }));
    expectReplacement(entry(getKeyForNullValue(), v3()));
  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_KEYS})
  public void testMergeAbsentNullKey() {
    assertEquals(
        "Map.merge(null, value, function) should return value",
        v3(),
        getMap()
            .merge(
                null,
                v3(),

     * @return This request, never {@code null}.
     */
    PluginPrefixRequest setPluginGroups(List<String> pluginGroups);

    /**
     * Gets the POM whose build plugins are to be scanned for the prefix.
     *
     * @return The POM whose build plugins are to be scanned for the prefix or {@code null} to only search the plugin
     *         repositories.
     */

  private val atomicRequestCount = AtomicInteger()

  private var serverSocketFactory_: ServerSocketFactory? = null
  private var serverSocket: ServerSocket? = null

  /** Non-null after [start]. */
  private var socketAddress_: InetSocketAddress? = null

  private var sslSocketFactory: SSLSocketFactory? = null
  private var clientAuth = CLIENT_AUTH_NONE

  private var closed: Boolean = false

  /**

                artifacts, projectArtifact.artifact, null, null, null, source, filter, Collections.emptyList(), null);
    }

    private ArtifactResolutionResult collect(ArtifactSpec a) throws ArtifactResolutionException {
        return artifactCollector.collect(
                Collections.singleton(a.artifact),
                projectArtifact.artifact,
                null,
                null,
                null,