"INVISIBLE_REFERENCE",
)

package okhttp3

import assertk.assertThat
import assertk.assertions.containsExactly
import assertk.assertions.hasMessage
import assertk.assertions.isEqualTo
import assertk.assertions.isIn
import java.io.IOException
import java.net.InetSocketAddress
import java.net.UnknownHostException
import java.time.Duration
import java.util.Arrays
import java.util.concurrent.TimeUnit

Now modify the file `main.py` to receive a body from a `PUT` request.

Declare the body using standard Python types, thanks to Pydantic.

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: Union[bool, None] = None


@app.get("/")

import java.util.List;
import java.util.Map;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.Mac;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import javax.security.auth.kerberos.KerberosKey;

import org.bouncycastle.asn1.ASN1InputStream;

 */
package okhttp3.compare

import assertk.assertThat
import assertk.assertions.isEqualTo
import assertk.assertions.isNotNull
import assertk.assertions.isNull
import assertk.assertions.matches
import java.net.http.HttpClient
import java.net.http.HttpClient.Redirect.NORMAL
import java.net.http.HttpRequest
import java.net.http.HttpResponse.BodyHandlers
import mockwebserver3.MockResponse

 */
package org.codelibs.fess.helper;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.util.Base64;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.zip.GZIPInputStream;

 */
package okhttp3.recipes;

import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.security.GeneralSecurityException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;

import com.google.common.collect.testing.google.DerivedGoogleCollectionGenerators.MapGenerator;
import com.google.common.collect.testing.testers.SetCreationTester;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map.Entry;
import java.util.Set;
import junit.framework.TestSuite;

/**

 */

package com.google.common.collect;

import static com.google.common.collect.ReflectionFreeAssertThrows.assertThrows;
import static java.util.Arrays.asList;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.testing.AnEnum;
import com.google.common.collect.testing.features.CollectionFeature;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import org.mockito.junit.jupiter.MockitoSettings;
import org.mockito.quality.Strictness;

import jcifs.Address;
import jcifs.CIFSContext;
import jcifs.CIFSException;
import jcifs.Configuration;
import jcifs.DialectVersion;
import jcifs.SmbConstants;

package org.apache.maven.artifact.resolver;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;