/** The HTTP {@code If-Unmodified-Since} header field name. */
  public static final String IF_UNMODIFIED_SINCE = "If-Unmodified-Since";

  /** The HTTP {@code Last-Event-ID} header field name. */
  public static final String LAST_EVENT_ID = "Last-Event-ID";

  /** The HTTP {@code Max-Forwards} header field name. */
  public static final String MAX_FORWARDS = "Max-Forwards";

OkHttp is **not** source-compatible for Kotlin callers, but upgrading should be automatic thanks to
Kotlin’s powerful deprecation features. Most developers should be able to use IntelliJ’s _Code
Cleanup_ for a safe and fast upgrade.


Backwards-Incompatible Changes
------------------------------

#### OkHttpClient final methods

`OkHttpClient` has 26 accessors like `interceptors()` and `writeTimeoutMillis()` that were non-final

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

type Metrics struct {
	LastReachableSecs, LastUnreachableSecs float64

	// Last whole minute stats
	TotalRequests, FailedRequests int64
	AvgSuccRTTMs                  float64
	MaxSuccRTTMs                  float64
}

// Metrics reports metrics related to plugin service reachability and stats for the last whole minute
func (o *AuthNPlugin) Metrics() Metrics {
	if o == nil {

// Copyright (c) 2015-2024 MinIO, Inc
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

   */

  /*
   * These generators also rely on consecutive integer inputs (not necessarily in order, but no
   * holes).
   */

  // SetCreationTester has some tests that pass in duplicates. Dedup them.
  private static <E extends Comparable<? super E>> SortedSet<E> nullCheckedTreeSet(E[] elements) {
    SortedSet<E> set = newTreeSet();
    for (E element : elements) {

    // We can provide a hint to the builder to preallocate the correct size when the iterable is
    // either a List (which likely has a fast size() implementation), or an ImmutableCollection
    // (which definitely has a fast size() implementation). While Collection also has a size()
    // implementation, it _may_ require iteration over the entire collection (e.g., a

    // We can provide a hint to the builder to preallocate the correct size when the iterable is
    // either a List (which likely has a fast size() implementation), or an ImmutableCollection
    // (which definitely has a fast size() implementation). While Collection also has a size()
    // implementation, it _may_ require iteration over the entire collection (e.g., a

```

Digamos que ahora el archivo `main.py` con tu aplicación de **FastAPI** tiene algunas otras **path operations**.

Tiene una operación `GET` que podría devolver un error.

Tiene una operación `POST` que podría devolver varios errores.

Ambas *path operations* requieren un `X-Token` header.

{* ../../docs_src/app_testing/app_b_an_py310/main.py *}

### Archivo de prueba extendido { #extended-testing-file }

    .build();
```

With a server that holds a certificate and a client that trusts it we have enough for an HTTPS
handshake. The best part of this example is that we don't need to make our test code insecure with a
a fake `HostnameVerifier` or `X509TrustManager`.

Certificate Authorities
-----------------------