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

/**
 * An immutable well-formed internet domain name, such as {@code com} or {@code foo.co.uk}. Only
 * syntactic analysis is performed; no DNS lookups or other network interactions take place. Thus
 * there is no guarantee that the domain actually exists on the internet.
 *
 * <p>One common use of this class is to determine whether a given string is likely to represent an

Examples:

    Source (English):

        «««
        <abbr title="Internet of Things">IoT</abbr>
        <abbr title="Central Processing Unit">CPU</abbr>
        <abbr title="too long; didn't read"><strong>TL;DR:</strong></abbr>
        »»»

    Result (German):

        «««
        <abbr title="Internet of Things – Internet der Dinge">IoT</abbr>

  /**
   * The HTTP nonstandard {@code X-Content-Security-Policy} header field name. It was introduced in
   * <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1</a> and used by the Firefox until
   * version 23 and the Internet Explorer version 10. Please, use {@link #CONTENT_SECURITY_POLICY}
   * to pass the CSP.
   *
   * @since 20.0
   */
  public static final String X_CONTENT_SECURITY_POLICY = "X-Content-Security-Policy";

  /**

Es wurde erstellt, um den HTML-Code im Backend zu generieren, nicht um APIs zu erstellen, die von einem modernen Frontend (wie React, Vue.js und Angular) oder von anderen Systemen (wie <abbr title="Internet of Things – Internet der Dinge">IoT</abbr>-Geräten) verwendet werden, um mit ihm zu kommunizieren.

### <a href="https://www.django-rest-framework.org/" class="external-link" target="_blank">Django REST Framework</a> { #django-rest-framework }

* Assumptions: What is Offline?

  For the purposes of determining the areas sensitive to offline status,
  it is definitely useful to define what the offline state really means.

  [[1]] This is obvious, but the network/internet is unavailable.

  [[2]] Localhost (127.0.0.1) may also be unavailable if the whole
        network stack is offline.

  [[3]] "Remote" repositories referenced using the file:// protocol may

///

For example, this custom validator checks that the item ID starts with `isbn-` for an <abbr title="ISBN means International Standard Book Number">ISBN</abbr> book number or with `imdb-` for an <abbr title="IMDB (Internet Movie Database) is a website with information about movies">IMDB</abbr> movie URL ID:

{* ../../docs_src/query_params_str_validations/tutorial015_an_py310.py hl[5,16:19,24] *}

/// info

Fue creado para generar el HTML en el backend, no para crear APIs utilizadas por un frontend moderno (como React, Vue.js y Angular) o por otros sistemas (como dispositivos del <abbr title="Internet of Things – Internet de las cosas">IoT</abbr>) comunicándose con él.

### <a href="https://www.django-rest-framework.org/" class="external-link" target="_blank">Django REST Framework</a> { #django-rest-framework }

Foi criado para gerar o HTML no backend, não para criar APIs usadas por um frontend moderno (como React, Vue.js e Angular) ou por outros sistemas (como dispositivos <abbr title="Internet of Things – Internet das Coisas">IoT</abbr>) comunicando com ele.

### <a href="https://www.django-rest-framework.org/" class="external-link" target="_blank">Django REST Framework</a> { #django-rest-framework }

{* ../../docs_src/query_params_str_validations/tutorial015_an_py310.py hl[5,16:19,24] *}

/// info | Дополнительная информация

///

Наприклад, цей кастомний валідатор перевіряє, чи починається ID елемента з `isbn-` для номера книги <abbr title="ISBN означає Міжнародний стандартний номер книги">ISBN</abbr> або з `imdb-` для ID URL фільму на <abbr title="IMDB (Internet Movie Database) це вебсайт з інформацією про фільми">IMDB</abbr>:

{* ../../docs_src/query_params_str_validations/tutorial015_an_py310.py hl[5,16:19,24] *}

/// info | Інформація