import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Utility {@link CacheLoader} implementations intended for use in testing.
 *
 * @author mike nonemacher
 */
@GwtCompatible(emulated = true)
class TestingCacheLoaders {

  /**
   * Returns a {@link CacheLoader} that implements a naive {@link CacheLoader#loadAll}, delegating
   * {@link CacheLoader#load} calls to {@code loader}.
   */

            // <tr>
            //   <td><link linkend="$id"><literal>$name</literal></link</td>
            //   <td>$description</td>
            // </tr>
            tr = document.createElement("tr");
            parent.appendChild(tr);

            td = document.createElement("td");
            tr.appendChild(td);
            Element link = document.createElement("link");
            td.appendChild(link);

            // <tr>
            //   <td><link linkend="$id"><literal>$name</literal></link</td>
            //   <td>$description</td>
            // </tr>
            tr = document.createElement("tr");
            parent.appendChild(tr);

            td = document.createElement("td");
            tr.appendChild(td);
            Element link = document.createElement("link");
            td.appendChild(link);

 * <p>
 * A type can be marked {@link Consumer} or {@link Provider} but not both. A type is assumed to be
 * {@link Consumer} if it is not marked either {@link Consumer} or {@link Provider}.
 * <p>
 * A package can be marked {@link Provider}. In this case, all types in the package are considered
 * to be a provider type regardless of whether they are marked {@link Consumer} or {@link Provider}.
 *
 * @see Consumer
 * @since 4.0.0

    }

    /**
     * デフォルト構成の{@link SAXParserFactory}を使って{@link SAXParser}の新しいインスタンスを作成します。
     *
     * @return {@link SAXParser}の新しいインスタンス
     */
    public static SAXParser newSAXParser() {
        return newSAXParser(newInstance());
    }

    /**
     * 指定の{@link SAXParserFactory}を使って{@link SAXParser}の新しいインスタンスを作成します。
     *
     * @param factory
     *            {@link SAXParserFactory}。{@literal null}であってはいけません

    }
    return array;
  }

  /**
   * Returns a fixed-size list backed by the specified array, similar to {@link
   * Arrays#asList(Object[])}. The list supports {@link List#set(int, Object)}, but any attempt to
   * set a value to {@code null} will result in a {@link NullPointerException}.
   *
   * <p>The returned list maintains the values, but not the identities, of {@code Float} objects

    }
    return array;
  }

  /**
   * Returns a fixed-size list backed by the specified array, similar to {@link
   * Arrays#asList(Object[])}. The list supports {@link List#set(int, Object)}, but any attempt to
   * set a value to {@code null} will result in a {@link NullPointerException}.
   *
   * <p>The returned list maintains the values, but not the identities, of {@code Float} objects

   * a map serialized by {@link #writeMap(Map, ObjectOutputStream)}, the number of distinct elements
   * in a multiset serialized by {@link #writeMultiset(Multiset, ObjectOutputStream)}, or the number
   * of distinct keys in a multimap serialized by {@link #writeMultimap(Multimap,
   * ObjectOutputStream)}.
   */

Standardmäßig konvertiert **FastAPI** diesen Rückgabewert automatisch nach JSON, mithilfe des `jsonable_encoder`, der in [JSON-kompatibler Encoder](../tutorial/encoder.md){.internal-link target=_blank} erläutert wird.

Dann würde es hinter den Kulissen diese JSON-kompatiblen Daten (z. B. ein `dict`) in eine `JSONResponse` einfügen, die zum Senden der Response an den Client verwendet würde.

Você verá a documentação automática da API para a aplicação principal, incluindo apenas suas próprias _operações de rota_:

<img src="/img/tutorial/sub-applications/image01.png">

E então, abra a documentação para a sub-aplicação, em <a href="http://127.0.0.1:8000/subapi/docs" class="external-link" target="_blank">http://127.0.0.1:8000/subapi/docs</a>.