///

## Zusätzliche Information hinzufügen { #add-extra-information }

Sie können zusätzliche Information in `Field`, `Query`, `Body`, usw. deklarieren. Und es wird im generierten JSON-Schema untergebracht.

Sie werden später mehr darüber lernen, wie man zusätzliche Information unterbringt, wenn Sie lernen, Beispiele zu deklarieren.

/// warning | Achtung

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.common.base;

import org.jspecify.annotations.Nullable;

/** Holder for extra methods of {@code Objects} only in web. */
public abstract class ExtraObjectsMethodsForWeb {
  public static boolean equal(@Nullable String a, @Nullable String b) {
    return a == b;
  }

plugins {
  id("java")
  id("application")
  id("com.github.iherasymenko.jlink") version "0.7"
  id("org.gradlex.extra-java-module-info") version "1.13.1"
}

dependencies {
  implementation(projects.okhttp)
  implementation(projects.loggingInterceptor)

  testImplementation(projects.okhttp)
  testImplementation(projects.loggingInterceptor)
  testImplementation(projects.mockwebserver3)
  testImplementation(projects.mockwebserver3Junit5)

        public Map<String, String> extraInterpolationSource() {
            Map<String, String> extra = new HashMap<>();
            extra.put("session.topDirectory", topDirectory.toString());
            if (rootDirectory != null) {
                extra.put("session.rootDirectory", rootDirectory.toString());
            }
            return extra;
        }
    }

    @Override

        NullPointerException.class, () -> multimap().putAll(k3(), newArrayList(v3(), null)));

    Collection<V> values = multimap().get(k3());
    if (values.size() == 0) {
      expectUnchanged();
      // Be extra thorough in case internal state was corrupted by the expected null.
      assertEquals(new ArrayList<>(), new ArrayList<>(values));
      assertEquals(size, multimap().size());
    } else {

    ...
```

Python will have to compare the whole `stanleyjobso` in both `stanleyjobsox` and `stanleyjobson` before realizing that both strings are not the same. So it will take some extra microseconds to reply back "Incorrect username or password".

#### The time to answer helps the attackers { #the-time-to-answer-helps-the-attackers }

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package bpool

import "sync"

// Pool is a single type sync.Pool with a few extra properties:
// If New is not set Get may return the zero value of T.
type Pool[T any] struct {
	New func() T
	p   sync.Pool
}

// Get will retuen a new T
func (p *Pool[T]) Get() T {
	v, ok := p.p.Get().(T)

        }
        if (elements.length > 1) {
          /*
           * When a test requests a multiset with duplicates, our plan of
           * "add an extra item 0 to A and an extra item 1 to B" really means
           * "add an extra item 0 to A and B," which isn't what we want.
           */
          if (!Objects.equals(elements[0], elements[1])) {
            multiset2.add(elements[1], 2);
          }

from typing import Union

from fastapi import FastAPI
from fastapi.testclient import TestClient
from pydantic import BaseModel, ConfigDict


class FooBaseModel(BaseModel):
    model_config = ConfigDict(extra="forbid")


class Foo(FooBaseModel):
    pass


app = FastAPI()


@app.post("/")
async def post(
    foo: Union[Foo, None] = None,
):
    return foo


client = TestClient(app)

Pydanticのモデルの Configuration を利用して、 `extra` フィールドを `forbid` とすることができます。

{* ../../docs_src/cookie_param_models/tutorial002_an_py39.py hl[10] *}

もしクライアントが**余分なクッキー**を送ろうとすると、**エラー**レスポンスが返されます。