return predicate instanceof CharMatcher ? (CharMatcher) predicate : new ForPredicate(predicate);
  }

  // Constructors

  /**
   * Constructor for use by subclasses. When subclassing, you may want to override {@code
   * toString()} to provide a useful description.
   */
  protected CharMatcher() {}

  // Abstract methods

    public String toString() {
      synchronized (mutex) {
        return delegate.toString();
      }
    }

    // Serialization invokes writeObject only when it's private.
    // The SynchronizedObject subclasses don't need a writeObject method since
    // they don't contain any non-transient member variables, while the
    // following writeObject() handles the SynchronizedObject members.

    @GwtIncompatible

Nós poderíamos fazer melhor.

Podemos declarar um modelo `UserBase` que serve como base para nossos outros modelos. E então podemos fazer subclasses desse modelo que herdam seus atributos (declarações de tipo, validação, etc.).

Toda conversão de dados, validação, documentação, etc. ainda funcionará normalmente.

E as ferramentas também ficarão felizes porque `RedirectResponse` e ​​`JSONResponse` são subclasses de `Response`, então a anotação de tipo está correta.

### Anote uma subclasse de Response { #annotate-a-response-subclass }

Você também pode usar uma subclasse de `Response` na anotação de tipo:

    public String toString() {
      synchronized (mutex) {
        return delegate.toString();
      }
    }

    // Serialization invokes writeObject only when it's private.
    // The SynchronizedObject subclasses don't need a writeObject method since
    // they don't contain any non-transient member variables, while the
    // following writeObject() handles the SynchronizedObject members.

    @GwtIncompatible

## 标题 { #headings }

//// tab | 测试

### 开发 Web 应用——教程 { #develop-a-webapp-a-tutorial }

Hello.

### 类型提示与注解 { #type-hints-and-annotations }

Hello again.

### 超类与子类 { #super-and-subclasses }

Hello again.

////

//// tab | 信息

关于标题的唯一硬性规则是：LLM 必须保持花括号内的哈希部分不变，以确保链接不会失效。

参见 `scripts/translate.py` 中通用提示的 `### Headings` 部分。

### Desarrolla una webapp - un tutorial { #develop-a-webapp-a-tutorial }

Hola.

### Anotaciones de tipos y -anotaciones { #type-hints-and-annotations }

Hola de nuevo.

### Superclases y subclases { #super-and-subclasses }

Hola de nuevo.

////

//// tab | Info

Привіт.

### Підказки типів та - анотації { #type-hints-and-annotations }

Ще раз привіт.

### Супер- та підкласи { #super-and-subclasses }

Ще раз привіт.

////

//// tab | Інформація

Єдине жорстке правило для заголовків - LLM має залишати хеш-частину в фігурних дужках незмінною, щоб посилання не ламалися.

    return predicate instanceof CharMatcher ? (CharMatcher) predicate : new ForPredicate(predicate);
  }

  // Constructors

  /**
   * Constructor for use by subclasses. When subclassing, you may want to override {@code
   * toString()} to provide a useful description.
   */
  protected CharMatcher() {}

  // Abstract methods

_2019-02-05_

 *  Fix: Don't crash when using a custom `X509TrustManager` or `SSLSocket` on Android. When we
    removed obsolete code for Android 4.4 we inadvertently also removed support for custom
    subclasses. We've restored that support!


## Version 3.13.0

_2019-02-04_

 *  **This release bumps our minimum requirements to Java 8+ or Android 5+.** Cutting off old