/**
 * Base class for implementing services that can handle {@link #doStart} and {@link #doStop}
 * requests, responding to them with {@link #notifyStarted()} and {@link #notifyStopped()}
 * callbacks. Its subclasses must manage threads manually; consider {@link
 * AbstractExecutionThreadService} if you need only a single execution thread.
 *
 * @author Jesse Wilson
 * @author Luke Sandberg
 * @since 1.0
 */
@GwtIncompatible

 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */

/*
 * Source:
 * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/test/tck/JSR166TestCase.java?revision=1.90
 * (We have made some trivial local modifications (commented out
 * uncompilable code).)
 */

package com.google.common.util.concurrent;

import static com.google.common.testing.SerializableTester.reserialize;

    Push your local changes to your forked copy of the repository and [submit a pull request](https://help.github.com/articles/using-pull-requests). In the pull request, choose a title which sums up the changes that you have made, and in the body provide more details about what your changes do. Also mention the number of the issue where discussion has taken place, eg "Closes #123".

            assertTrue("Constructor should be private", java.lang.reflect.Modifier.isPrivate(constructor.getModifiers()));

            // Test that constructor is accessible when made accessible
            constructor.setAccessible(true);
            SystemUtil instance = constructor.newInstance();
            assertNotNull(instance);

   * compares as equal to the key.
   */
  enum KeyPresentBehavior {
    /**
     * Return the index of any list element that compares as equal to the key. No guarantees are
     * made as to which index is returned, if more than one element compares as equal to the key.
     */
    ANY_PRESENT {
      @Override
      <E extends @Nullable Object> int resultIndex(
          Comparator<? super E> comparator,

Así que, para equilibrar eso, imagina la siguiente historia corta:

> Tienes que limpiar una casa grande y sucia.

*Sí, esa es toda la historia*.

---

No hay esperas 🕙 en ninguna parte, solo mucho trabajo por hacer, en múltiples lugares de la casa.

### Anotaciones de Tipos y Herramientas { #type-annotations-and-tooling }

Primero vamos a ver cómo los editores, mypy y otras herramientas verían esto.

`BaseUser` tiene los campos base. Luego `UserIn` hereda de `BaseUser` y añade el campo `password`, por lo que incluirá todos los campos de ambos modelos.

Anotamos el tipo de retorno de la función como `BaseUser`, pero en realidad estamos devolviendo un `UserIn` instance.

   *   <li><b>If the character at the specified index is not a surrogate, it is returned.</b>
   *   <li>If the first character was a high surrogate value, then an attempt is made to read the
   *       next character.
   *       <ol>
   *         <li><b>If the end of the sequence was reached, the negated value of the trailing high
   *             surrogate is returned.</b>

     * is currently {@code oldCount}. If {@code element} does not appear in the multiset exactly
     * {@code oldCount} times, no changes will be made.
     *
     * @return {@code true} if the change was successful. This usually indicates that the multiset
     *     has been modified, but not always: in the case that {@code oldCount == newCount}, the

### Translations

Help with translations is VERY MUCH appreciated! And it can't be done without the help from the community. 🌎 🚀

Translation pull requests are made by LLMs guided with prompts designed by the FastAPI team together with the community of native speakers for each supported language.

#### LLM Prompt per Language