E `Field` do Pydantic retorna uma instância de `FieldInfo` também.

`Body` também retorna objetos de uma subclasse de `FieldInfo` diretamente. E tem outras que você verá mais tarde que são subclasses da classe `Body`.

from fastapi import FastAPI
from pydantic import BaseModel, EmailStr

app = FastAPI()


class UserIn(BaseModel):
    username: str
    password: str
    email: EmailStr
    full_name: Union[str, None] = None


class UserOut(BaseModel):
    username: str
    email: EmailStr
    full_name: Union[str, None] = None


class UserInDB(BaseModel):
    username: str
    hashed_password: str
    email: EmailStr

from fastapi import FastAPI
from fastapi.responses import FileResponse
from pydantic import BaseModel


class Item(BaseModel):
    id: str
    value: str


app = FastAPI()


@app.get(
    "/items/{item_id}",
    response_model=Item,
    responses={
        200: {
            "content": {"image/png": {}},
            "description": "Return the JSON item or an image.",
        }
    },
)

from fastapi import Depends, FastAPI

app = FastAPI()


fake_items_db = [{"item_name": "Foo"}, {"item_name": "Bar"}, {"item_name": "Baz"}]


class CommonQueryParams:
    def __init__(self, q: str | None = None, skip: int = 0, limit: int = 100):
        self.q = q
        self.skip = skip
        self.limit = limit


@app.get("/items/")
async def read_items(commons=Depends(CommonQueryParams)):
    response = {}
    if commons.q:

from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


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


@app.post(
    "/items/",
    response_model=Item,
    summary="Create an item",

			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "Name":
			z.Name, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Name")
				return
			}
		case "Created":
			z.Created, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "Created")
				return
			}
		case "LockEnabled":
			z.LockEnabled, err = dc.ReadBool()
			if err != nil {

import org.lastaflute.web.servlet.request.ResponseManager;

/**
 * Utility class for accessing system components and dependencies.
 * Provides centralized access to various helpers, managers, and services throughout the Fess application.
 */
public final class ComponentUtil {

    private static final Logger logger = LogManager.getLogger(ComponentUtil.class);

    /** Component map for storing component instances. */

        // When/Then - Verify the interface extends the expected interfaces
        assertTrue(CommonServerMessageBlock.class.isAssignableFrom(CommonServerMessageBlockRequest.class));
        assertTrue(jcifs.util.transport.Request.class.isAssignableFrom(CommonServerMessageBlockRequest.class));
    }

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import jcifs.smb.SID;

/**
 * Unit tests for PacLogonInfo class.
 * Tests the parsing and data extraction from PAC Logon Info structures.
 */
class PacLogonInfoTest {

    private static final long TEST_FILETIME = 130640000000000000L;
    private static final String TEST_USERNAME = "testuser";

    assertThat(recordedEventTypes).startsWith(
      CallStart::class,
      ProxySelectStart::class,
      ProxySelectEnd::class,
      DnsStart::class,
      DnsEnd::class,
      ConnectStart::class,
      SecureConnectStart::class,
    )
    assertThat(recordedEventTypes).endsWith(CallFailed::class)
  }

  private fun buildClient(
    heldCertificate: HeldCertificate?,