* class for information about migrating to {@code java.util.function}.
 *
 * <p>All methods return serializable functions as long as they're given serializable parameters.
 *
 * <p>See the Guava User Guide article on <a
 * href="https://github.com/google/guava/wiki/FunctionalExplained">the use of {@code Function}</a>.
 *
 * @author Mike Bostock
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible

import java.util.OptionalLong;
import org.jspecify.annotations.Nullable;

/**
 * Helper functions that operate on any {@code Object}, and are not already provided in {@link
 * java.util.Objects}.
 *
 * <p>See the Guava User Guide on <a
 * href="https://github.com/google/guava/wiki/CommonObjectUtilitiesExplained">writing {@code Object}
 * methods with {@code MoreObjects}</a>.
 *
 * @author Laurence Gonsalves
 * @since 18.0 (since 2.0 as {@code Objects})

  /**
   * NaCl applications. For more information see <a
   * href="https://developer.chrome.com/native-client/devguide/coding/application-structure">the
   * Developer Guide for Native Client Application Structure</a>.
   *
   * @since 20.0
   */
  public static final MediaType NACL_APPLICATION = createConstant(APPLICATION_TYPE, "x-nacl");

  /**

import org.jspecify.annotations.Nullable;

/**
 * A {@link Table} whose contents will never change, with many other important properties detailed
 * at {@link ImmutableCollection}.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/ImmutableCollectionsExplained">immutable collections</a>.
 *
 * @author Gregory Kick
 * @since 11.0
 */
@GwtCompatible

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

Teljesebb példákért és funkciókért tekintsd meg a <a href="https://fastapi.tiangolo.com/tutorial/">Tutorial - User Guide</a> -t.

**Spoiler veszély**: a Tutorial - User Guidehoz tartozik:

* **Paraméterek** deklarációja különböző helyekről: **header-ök**, **cookie-k**, **form mezők** és **fájlok**.

 * in a way that affects its {@link Object#equals} behavior. Undefined behavior and bugs will
 * result.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#multimap">{@code Multimap}</a>.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 2.0
 */
@GwtCompatible

 * consecutively when iterating. Elements iterate in order by the <i>first</i> appearance of that
 * element when the multiset was created.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/ImmutableCollectionsExplained">immutable collections</a>.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 2.0
 */
@GwtCompatible

Потім, використовуючи `random.choice()`, ми можемо отримати випадкове значення зі списку, тобто отримуємо кортеж із `(id, name)`. Це може бути щось на зразок `("imdb-tt0371724", "The Hitchhiker's Guide to the Galaxy")`.

Далі ми **присвоюємо ці два значення** кортежу змінним `id` і `name`.

Тож, якщо користувач не вказав ID елемента, він все одно отримає випадкову рекомендацію.

## **2. Prerequisites**

- Install Hortonworks Distribution using this [guide.](https://docs.hortonworks.com/HDPDocuments/Ambari-2.7.1.0/bk_ambari-installation/content/ch_Installing_Ambari.html)

import java.util.function.BinaryOperator;
import java.util.stream.Collector;
import org.jspecify.annotations.Nullable;

/**
 * Provides static methods that involve a {@code Table}.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/CollectionUtilitiesExplained#tables">{@code Tables}</a>.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 7.0
 */
@GwtCompatible