繰り返しになりますが、**FastAPI** を使用して、その宣言を行うだけで以下のような恩恵を受けられます:

* ネストされたモデルでも対応可能なエディタのサポート（補完など）
* データ変換
* データの検証
* 自動文書化

## 特殊な型とバリデーション { #special-types-and-validation }

`str`や`int`、`float`などの通常の単数型の他にも、`str`を継承したより複雑な単数型を使うこともできます。

すべてのオプションをみるには、[Pydantic の型の概要](https://docs.pydantic.dev/latest/concepts/types/)を確認してください。次の章でいくつかの例をみることができます。

例えば、`Image`モデルのように`url`フィールドがある場合、`str`の代わりにPydanticの`HttpUrl`のインスタンスとして宣言することができます:

        }
    }

    /**
     * Test that all registered types work correctly.
     * This ensures our registration covers the common use cases.
     */
    @Test
    public void test_allRegisteredTypesWork() {
        // Test various registered types
        Map<String, Object> testData = new HashMap<>();
        testData.put("string", "test");

 * "https://github.com/google/guava/wiki/FunctionalExplained">the use of functional types</a>.
 *
 * <h3>For Java 8+ users</h3>
 *
 * <p>This interface is now a legacy type. Use {@code java.util.function.Supplier} (or the
 * appropriate primitive specialization such as {@code IntSupplier}) instead whenever possible.
 * Otherwise, at least reduce <i>explicit</i> dependencies on this type by using lambda expressions

   * harmless, rather than just 99.99% harmless.
   */
  @LazyInit private @Nullable List<@Nullable Present<V>> values;

  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  CollectionFuture(
      ImmutableCollection<? extends ListenableFuture<? extends V>> futures,
      boolean allMustSucceed) {
    super(futures, allMustSucceed, true);

    List<@Nullable Present<V>> values =

 * This class handles DFS referral responses that redirect clients to alternate servers for accessing
 * distributed file system resources, supporting multiple DFS versions and referral types.
 */
public class Referral implements Decodable {

    /**
     * Default constructor for Referral.
     */
    public Referral() {
        // Default constructor
    }

    int version;

limitations under the License.
==============================================================================*/
#include "tensorflow/c/eager/gradient_checker.h"

#include <memory>

#include "absl/types/span.h"
#include "tensorflow/c/eager/abstract_tensor_handle.h"
#include "tensorflow/c/experimental/ops/math_ops.h"
#include "tensorflow/c/tf_tensor.h"

namespace tensorflow {
namespace gradients {

   *
   * <blockquote>
   *
   * "Some collection implementations have restrictions on the elements that they may contain. For
   * example, some implementations prohibit null elements, and some have restrictions on the types
   * of their elements."
   *
   * </blockquote>
   */
  RESTRICTS_ELEMENTS,

  /**
   * Indicates that a collection has a well-defined ordering of its elements. The ordering may

        }
    }

    @Test
    @DisplayName("getPipe method should handle different pipe types")
    void testGetPipeResourceWithDifferentTypes() throws CIFSException {
        // Test different pipe types
        int[] pipeTypes = { 0, 1, 2 };

        for (int pipeType : pipeTypes) {
            // When

/**
 * Action class for handling document redirection requests.
 * This action processes "go" requests that redirect users to specific documents
 * while tracking click events and handling various URL types including file system paths.
 */
public class GoAction extends FessSearchAction {

    /**
     * Default constructor for GoAction.
     */
    public GoAction() {
        super();
    }

Для цього використайте стандартну підказку типу Python [`typing.Union`](https://docs.python.org/3/library/typing.html#typing.Union):

/// note | Примітка

Під час визначення [`Union`](https://docs.pydantic.dev/latest/concepts/types/#unions) спочатку вказуйте найконкретніший тип, а потім менш конкретний. У прикладі нижче більш конкретний `PlaneItem` стоїть перед `CarItem` у `Union[PlaneItem, CarItem]`.

///