* k)), as opposed to e.g. {@code Stream.sorted(comparator).limit(k)}, which currently takes O(n
   * log n) time and O(n) space.
   *
   * @throws IllegalArgumentException if {@code k < 0}
   * @since 22.0
   */
  public static <T extends @Nullable Object> Collector<T, ?, List<T>> least(
      int k, Comparator<? super T> comparator) {
    checkNonnegative(k, "k");

                (k, v) -> {
                  throw new AssertionFailedError();
                }));
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  public void testComputeIfPresent_unsupportedAbsent() {
    try {
      getMap()
          .computeIfPresent(
              k3(),
              (k, v) -> {
                throw new AssertionFailedError();
              });

### **4.1 Spark Pi**

Test the Spark installation by running the following compute intensive example, which calculates pi by “throwing darts” at a circle. The program generates points in the unit square ((0,0) to (1,1)) and counts how many points fall within the unit circle within the square. The result approximates pi.

   * Returns the {@code short} value that is equal to {@code value}, if possible.
   *
   * @param value any value in the range of the {@code short} type
   * @return the {@code short} value that equals {@code value}
   * @throws IllegalArgumentException if {@code value} is greater than {@link Short#MAX_VALUE} or
   *     less than {@link Short#MIN_VALUE}
   */
  public static short checkedCast(long value) {
    short result = (short) value;

     * @param artifactCoordinates t
     * @return the version range resolution result
     * @throws VersionResolverException if an errors occurs
     */
    @Nonnull
    default VersionRangeResolverResult resolve(
            @Nonnull Session session, @Nonnull ArtifactCoordinates artifactCoordinates)
            throws VersionResolverException {
        return resolve(VersionRangeResolverRequest.build(session, artifactCoordinates));

                if (entry.getPr() == null) {
                    throw new GradleException(
                        "[" + path + "] must provide a [pr] number (only 'known-issue' and " + "'security' entries can omit this"
                    );
                }

                if (entry.getArea() == null) {
                    throw new GradleException(

  }

  override fun getValueNames(): Array<String> = delegate!!.valueNames

  @Throws(SSLPeerUnverifiedException::class)
  override fun getPeerCertificates(): Array<Certificate>? = delegate!!.peerCertificates

  override fun getLocalCertificates(): Array<Certificate>? = delegate!!.localCertificates

  @Suppress("removal", "OVERRIDE_DEPRECATION")
  @Throws(SSLPeerUnverifiedException::class)

     * @param userToolchainsSource The {@link Source} pointing to the user toolchains, must not be {@code null}
     * @throws ToolchainsBuilderException if the project cannot be created
     * @throws IllegalArgumentException if an argument is {@code null} or invalid
     * @see #build(ToolchainsBuilderRequest)
     */
    @Nonnull
    default ToolchainsBuilderResult build(

    assertThat(Reflection.getPackageName(Map.Entry.class)).isEqualTo("java.util");
  }

  public void testNewProxy() throws Exception {
    Runnable runnable = Reflection.newProxy(Runnable.class, X_RETURNER);
    assertThat(runnable.toString()).isEqualTo("x");
  }

  public void testNewProxyCantWorkOnAClass() throws Exception {
    assertThrows(
        IllegalArgumentException.class, () -> Reflection.newProxy(Object.class, X_RETURNER));

  <T> T getFinalValue(ClosingFuture<T> closingFuture) throws ExecutionException {
    return getUninterruptibly(closingFuture.finishToFuture());
  }

  @Override
  void assertFinallyFailsWithException(ClosingFuture<?> closingFuture) {
    assertThatFutureFailsWithException(closingFuture.finishToFuture());
  }

  @Override
  void assertBecomesCanceled(ClosingFuture<?> closingFuture) throws ExecutionException {