+ "equal to the hash (2) of TestObject{group=1, item=2} [group 1, item 2]";
      if (!expected.getMessage().contains(expectedMessage)) {
        fail("<" + expected.getMessage() + "> expected to contain <" + expectedMessage + ">");
      }
      return;
    }
    fail();
  }

  /** An object with a friendly {@link #toString()}. */
  private static final class TestObject {
    final int group;

              + "equal to the hash (2) of TestObject{group=1, item=2} [group 1, item 2]";
      if (!expected.getMessage().contains(expectedMessage)) {
        fail("<" + expected.getMessage() + "> expected to contain <" + expectedMessage + ">");
      }
      return;
    }
    fail();
  }

  /** An object with a friendly {@link #toString()}. */
  private static final class TestObject {
    final int group;

`CORSMiddleware` отвечает на два типа HTTP-запросов...

### CORS-запросы с предварительной проверкой { #cors-preflight-requests }

Это любые `OPTIONS`-запросы с заголовками `Origin` и `Access-Control-Request-Method`.

В этом случае middleware перехватит входящий запрос и отправит соответствующие CORS-заголовки в ответе, а также ответ `200` или `400` в информационных целях.

### Простые запросы { #simple-requests }

        HTTP_PROXY_AUTH -> "Proxy-Authenticate"
        else -> return emptyList()
      },
    )
  }

  /**
   * Returns the cache control directives for this response. This is never null, even if this
   * response contains no `Cache-Control` header.
   */
  @get:JvmName("cacheControl")
  val cacheControl: CacheControl
    get() {
      var result = lazyCacheControl
      if (result == null) {

     * We should always check whether the request pom project is collected.
     * The integration tests for MNG-6223 are examples for this scenario.
     *
     * @return true if the collected projects contain the requested project (for example with -f)
     */
    private boolean isRequestedProjectCollected(MavenExecutionRequest request, List<MavenProject> projects) {

El middleware responde a dos tipos particulares de request HTTP...

### Requests de preflight CORS { #cors-preflight-requests }

Estos son cualquier request `OPTIONS` con headers `Origin` y `Access-Control-Request-Method`.

En este caso, el middleware interceptará el request entrante y responderá con los headers CORS adecuados, y un response `200` o `400` con fines informativos.

### Requests simples { #simple-requests }

 * </pre>
 *
 * <p>This tests {@code foo.equals(foo)}, {@code foo.equals(null)}, and a few other operations.
 *
 * <p>For more extensive testing, add multiple equality groups. Each group should contain objects
 * that are equal to each other but unequal to the objects in any other group. For example:
 *
 * <pre>
 * new EqualsTester()
 *     .addEqualityGroup(new User("page"), new User("page"))

): Int {
  for (i in startIndex until endIndex) {
    if (this[i] == delimiter) return i
  }
  return endIndex
}

/**
 * Returns the index of the first character in this string that is either a control character (like
 * `\u0000` or `\n`) or a non-ASCII character. Returns -1 if this string has no such characters.
 */
internal fun String.indexOfControlOrNonAscii(): Int {
  for (i in 0 until length) {
    val c = this[i]

// metaCacheEntriesSorted contains metacache entries that are sorted.
type metaCacheEntriesSorted struct {
	o metaCacheEntries
	// list id is not serialized
	listID string
	// Reuse buffers
	reuse bool
	// Contain the last skipped object after an ILM expiry evaluation
	lastSkippedEntry string
}

// shallowClone will create a shallow clone of the array objects,
// but object metadata will not be cloned.

* `expose_headers` - 브라우저에 접근할 수 있어야 하는 모든 응답 헤더를 가리킵니다. 기본값은 `[]` 입니다.
* `max_age` - 브라우저가 CORS 응답을 캐시에 저장하는 최대 시간을 초 단위로 설정합니다. 기본값은 `600` 입니다.

미들웨어는 두가지 특정한 종류의 HTTP 요청에 응답합니다...

### CORS 사전 요청

`Origin` 및 `Access-Control-Request-Method` 헤더와 함께 전송하는 모든 `OPTIONS` 요청입니다.

이 경우 미들웨어는 들어오는 요청을 가로채 적절한 CORS 헤더와, 정보 제공을 위한 `200` 또는 `400` 응답으로 응답합니다.

### 단순한 요청

`Origin` 헤더를 가진 모든 요청. 이 경우 미들웨어는 요청을 정상적으로 전달하지만, 적절한 CORS 헤더를 응답에 포함시킵니다.