import warnings
from enum import Enum
from typing import Any, Callable, Dict, List, Optional, Sequence, Union

from fastapi.openapi.models import Example
from pydantic.fields import FieldInfo
from typing_extensions import Annotated, deprecated

from ._compat import PYDANTIC_V2, PYDANTIC_VERSION, Undefined

_Unset: Any = Undefined


class ParamTypes(Enum):
    query = "query"
    header = "header"
    path = "path"

  }

  @Override
  protected abstract SortedSet<String> create(String[] elements);

  /** Sorts the elements by their natural ordering. */
  @Override
  public List<String> order(List<String> insertionOrder) {
    sort(insertionOrder);
    return insertionOrder;
  }

  @Override
  public String belowSamplesLesser() {
    return "!! a";
  }

  @Override

import java.util.List;

public class AbstractNotAnnotatedInSuperclassTest extends AbstractEventBusTest<SubClass> {
  abstract static class SuperClass {
    public abstract void overriddenInSubclassNowhereAnnotated(Object o);

    public abstract void overriddenAndAnnotatedInSubclass(Object o);
  }

  static class SubClass extends SuperClass {

    result.usingGenerator(generator);
    return result;
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers = copyToList(super.getTesters());
    testers.addAll(ConcurrentMapTestSuiteBuilder.TESTERS);
    return testers;
  }

  @Override

# 기능

## FastAPI의 기능

**FastAPI**는 다음과 같은 기능을 제공합니다:

### 개방형 표준을 기반으로

* <abbr title="엔드포인트, 라우트로도 알려져 있습니다">경로</abbr><abbr title="POST, GET, PUT, DELETE와 같은 HTTP 메소드로 알려져 있습니다">작동</abbr>, 매개변수, 본문 요청, 보안 그 외의 선언을 포함한 API 생성을 위한 <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank"><strong>OpenAPI</strong></a>

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.service;

import java.util.List;

import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.pager.ReqHeaderPager;
import org.codelibs.fess.es.config.cbean.RequestHeaderCB;

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.service;

import java.util.List;

import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.pager.WebAuthPager;
import org.codelibs.fess.es.config.cbean.WebAuthenticationCB;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.util;

import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.codelibs.fess.Constants;
import org.opensearch.search.aggregations.Aggregations;
import org.opensearch.search.aggregations.bucket.filter.Filter;

            logger.debug("Loaded {} : {}", key, extractor.getClass().getName());
        }
    }

    public void addExtractor(final List<String> keyList, final Extractor extractor) {
        if (keyList == null || keyList.isEmpty()) {
            throw new CrawlerSystemException("The key list is empty.");
        }
        for (final String key : keyList) {
            addExtractor(key, extractor);
        }
    }

from typing import List, Union

from fastapi import FastAPI
from fastapi.encoders import jsonable_encoder
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: Union[str, None] = None
    description: Union[str, None] = None
    price: Union[float, None] = None
    tax: float = 10.5
    tags: List[str] = []


items = {
    "foo": {"name": "Foo", "price": 50.2},