`Body` também possui todas as validações adicionais e metadados de parâmetros como em `Query`,`Path` e outras que você verá depois.

///

## Declare um único parâmetro de corpo indicando sua chave

Suponha que você tem um único parâmetro de corpo `item`, a partir de um modelo Pydantic `Item`.

Por padrão, o **FastAPI** esperará que seu conteúdo venha no corpo diretamente.

 *
 * @since 4.0.0
 */
@Experimental
public interface ArtifactFactory extends Service {

    /**
     * Creates an artifact.
     *
     * @param request the request holding artifact creation parameters
     * @return an {@code Artifact}, never {@code null}
     * @throws IllegalArgumentException if {@code request} is null or {@code request.session} is null or invalid
     */
    @Nonnull

                            },
                        },
                    },
                    "summary": "Read Items",
                    "operationId": "read_items_items__get",
                    "parameters": [
                        {
                            "required": False,
                            "schema": IsDict(
                                {

{!../../docs_src/bigger_applications/app/routers/users.py!}
```

Sie können sich `APIRouter` als eine „Mini-`FastAPI`“-Klasse vorstellen.

Alle die gleichen Optionen werden unterstützt.

Alle die gleichen `parameters`, `responses`, `dependencies`, `tags`, usw.

/// tip | "Tipp"

In diesem Beispiel heißt die Variable `router`, aber Sie können ihr einen beliebigen Namen geben.

///

            clientEventsList.add(record.message)

            if (record.loggerName == "javax.net.ssl") {
              val parameters = record.parameters

              if (parameters != null) {
                clientEventsList.add(parameters.first().toString())
              }
            }
          }
        }
      }

      override fun flush() {
      }

                        },
                    },
                    "get": {
                        "summary": "Read Heroes",
                        "operationId": "read_heroes_heroes__get",
                        "parameters": [
                            {
                                "name": "offset",
                                "in": "query",
                                "required": False,

                        },
                    },
                    "get": {
                        "summary": "Read Heroes",
                        "operationId": "read_heroes_heroes__get",
                        "parameters": [
                            {
                                "name": "offset",
                                "in": "query",
                                "required": False,

 */

package com.google.common.base;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import com.google.common.annotations.GwtCompatible;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**

 */

package com.google.common.primitives;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import com.google.common.annotations.GwtCompatible;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**

import java.util.Set;
import javax.annotation.CheckForNull;

/**
 * A base implementation of {@link NetworkConnections} for directed networks.
 *
 * @author James Sexton
 * @param <N> Node parameter type
 * @param <E> Edge parameter type
 */
@ElementTypesAreNonnullByDefault
abstract class AbstractDirectedNetworkConnections<N, E> implements NetworkConnections<N, E> {