fun setLevel(level: Level) =
      apply {
        this.level = level
      }

    @JvmName("-deprecated_level")
    @Deprecated(
      message = "moved to var",
      replaceWith = ReplaceWith(expression = "level"),
      level = DeprecationLevel.ERROR,
    )
    fun getLevel(): Level = level

    @Throws(IOException::class)
    override fun intercept(chain: Interceptor.Chain): Response {

//   rules:
//     - type: object  # regular objects with zero or more older versions
//       name: NAME # match object names that satisfy the wildcard expression.
//       olderThan: 70h # match objects older than this value
//       createdBefore: "2006-01-02T15:04:05.00Z" # match objects created before "date"
//       tags:
//         - key: name

 *       .compare(this.anInt, that.anInt)
 *       .compare(this.anEnum, that.anEnum, Ordering.natural().nullsLast())
 *       .result();
 * }
 * }
 *
 * <p>The value of this expression will have the same sign as the <i>first nonzero</i> comparison
 * result in the chain, or will be zero if every comparison result was zero.
 *

  private double sumOfProductsOfDeltas = 0.0;

  /** Adds the given pair of values to the dataset. */
  public void add(double x, double y) {
    // We extend the recursive expression for the one-variable case at Art of Computer Programming
    // vol. 2, Knuth, 4.2.2, (16) to the two-variable case. We have two value series x_i and y_i.

* The parameter `regex` has been deprecated and replaced by `pattern`.
    * You can read more about it in the docs for [Query Parameters and String Validations: Add regular expressions](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#add-regular-expressions).
* New Pydantic models use an improved and simplified attribute `model_config` that takes a simple dict instead of an internal class `Config` for their configuration.

(if a <code>license_info</code> is set). The license name used for the API.</td></tr><tr><td><code>identifier</code></td><td><code>str</code></td><td>An <a href="https://spdx.org/licenses/" class="external-link" target="_blank">SPDX</a> license expression for the API. The <code>identifier</code> field is mutually exclusive of the <code>url</code> field. <small>Available since OpenAPI 3.1.0, FastAPI 0.99.0.</small></td></tr><tr><td><code>url</code></td><td><code>str</code></td><td>A URL to the license...

Crea funciones con un nombre que comience con `test_` (esta es la convención estándar de `pytest`).

Usa el objeto `TestClient` de la misma manera que con `httpx`.

Escribe declaraciones `assert` simples con las expresiones estándar de Python que necesites revisar (otra vez, estándar de `pytest`).

{* ../../docs_src/app_testing/tutorial001_py39.py hl[2,12,15:18] *}

/// tip | Consejo

  }

  /**
   * Returns a cache loader that uses {@code function} to load keys, without supporting either
   * reloading or bulk loading. This allows creating a cache loader using a lambda expression.
   *
   * <p>The returned object is serializable if {@code function} is serializable.
   *
   * @param function the function to be used for loading values; must never return {@code null}

    return new CompositionPredicate<>(predicate, function);
  }

  /**
   * Returns a predicate that evaluates to {@code true} if the {@code CharSequence} being tested
   * contains any match for the given regular expression pattern. The test used is equivalent to
   * {@code Pattern.compile(pattern).matcher(arg).find()}
   *
   * @throws IllegalArgumentException if the pattern is invalid
   * @since 3.0
   */

ame</code></td><td><code>str</code></td><td><strong>REQUERIDO</strong> (si se establece un <code>license_info</code>). El nombre de la licencia utilizada para la API.</td></tr><tr><td><code>identifier</code></td><td><code>str</code></td><td>Una expresión de licencia <a href="https://spdx.org/licenses/" class="external-link" target="_blank">SPDX</a> para la API. El campo <code>identifier</code> es mutuamente excluyente del campo <code>url</code>. <small>Disponible desde OpenAPI 3.1.0, FastAPI 0.9...