With just that Python type declaration, **FastAPI** will:

* Read the body of the request as JSON.
* Convert the corresponding types (if needed).
* Validate the data.
    * If the data is invalid, it will return a nice and clear error, indicating exactly where and what was the incorrect data.
* Give you the received data in the parameter `item`.

# first directory with .mvn subdirectory is considered project base directory
find_maven_basedir() {

  if [ -z "$1" ]
  then
    echo "Path not specified to find_maven_basedir"
    return 1
  fi

  basedir="$1"
  wdir="$1"
  while [ "$wdir" != '/' ] ; do
    if [ -d "$wdir"/.mvn ] ; then
      basedir=$wdir
      break
    fi
    # workaround for JBEAP-8937 (on Solaris 10/Sparc)

    @Resource
    private FileTransformer fileTransformer;

    @Resource
    private CrawlerContainer crawlerContainer;

    @Override
    protected String prepareConfigFile() {
        return "crawler.xml";
    }

    public void test_execute_web() throws Exception {
        final CrawlerWebServer server = new CrawlerWebServer(7070);
        server.start();

 * Fix: Respect read timeouts on recycled connections.
 * Fix: Transmit multiple cookie values as a single header with delimiter.
 * Fix: Ensure `null` is never returned from a connection's `getHeaderFields()`.
 * Fix: Persist proper `Content-Encoding` header to cache for GZip responses.
 * Fix: Eliminate rare race condition in SPDY streams that would prevent connection reuse.

    assertThat(Longs.toArray(list.subList(2, 2))).isEqualTo(new long[] {});
  }

  // `primitives` can't depend on `collect`, so this is what the prod code has to return.
  @SuppressWarnings("EmptyList")
  public void testAsListEmpty() {
    assertThat(Longs.asList(EMPTY)).isSameInstanceAs(Collections.emptyList());
  }

  @J2ktIncompatible

    assertThat(Shorts.toArray(list.subList(2, 2))).isEqualTo(new short[] {});
  }

  // `primitives` can't depend on `collect`, so this is what the prod code has to return.
  @SuppressWarnings("EmptyList")
  public void testAsListEmpty() {
    assertThat(Shorts.asList(EMPTY)).isSameInstanceAs(Collections.emptyList());
  }

  @J2ktIncompatible

Por defecto, **FastAPI** convertiría automáticamente ese valor de retorno a JSON usando el `jsonable_encoder` explicado en [JSON Compatible Encoder](../tutorial/encoder.md){.internal-link target=_blank}.

### コード内での`HTTPException`の発生

`HTTPException`は通常のPythonの例外であり、APIに関連するデータを追加したものです。

Pythonの例外なので、`return`ではなく、`raise`です。

これはまた、*path operation関数*の内部で呼び出しているユーティリティ関数の内部から`HTTPException`を発生させた場合、*path operation関数*の残りのコードは実行されず、そのリクエストを直ちに終了させ、`HTTPException`からのHTTPエラーをクライアントに送信することを意味します。

値を返す`return`よりも例外を発生させることの利点は、「依存関係とセキュリティ」のセクションでより明確になります。

この例では、クライアントが存在しないIDでアイテムを要求した場合、`404`のステータスコードを持つ例外を発生させます:

 * code shouldn't use these, they're necessary for clients migrating from OkHttp 3.x and this test
 * ensures the symbols remain available and with the expected parameter and return types.
 */
@Suppress(
  "DEPRECATION_ERROR",
  "UNUSED_VALUE",
  "UNUSED_VARIABLE",
  "VARIABLE_WITH_REDUNDANT_INITIALIZER",
)
class KotlinDeprecationErrorTest {
  private val factory = TestValueFactory()

    }

    @Test
    public void testCanCacheDirectoryListing() {
        String directoryPath = "/test/dir";
        Smb2LeaseKey leaseKey = new Smb2LeaseKey();

        // No cache entry - should return false
        assertFalse(directoryLeaseManager.canCacheDirectoryListing(directoryPath));

        // Create cache entry with read lease
        when(baseLeaseManager.requestLease(anyString(), anyInt())).thenReturn(leaseKey);