*
   * <p>TODO: b/147144588 - We are currently also missing the methods inherited from {@link
   * AnnotatedElement}, which {@code TypeVariable} began to extend only in Java 8. Those methods
   * refer only to types present under Android, so we could implement them in {@code
   * TypeVariableImpl} today. (We could probably then make {@code TypeVariableImpl} implement {@code
   * AnnotatedElement} so that we get partial compile-time checking.)
   *

   *
   * @param collection the collection whose complement should be stored in the enum set
   * @return a new, modifiable {@code EnumSet} containing all values of the enum that aren't present
   *     in the given collection
   * @throws IllegalArgumentException if {@code collection} is not an {@code EnumSet} instance and
   *     contains no elements
   */
  @J2ktIncompatible

    // ambiguous without the call to .booleanValue to unbox the Boolean
    checkState(boxedBoolean.booleanValue(), "", 1);
    // ambiguous without the cast to Object because the boxed predicate prevents any overload from
    // being selected in phase 1
    checkState(boxedBoolean, "", (Object) boxedLong);

    // ternaries introduce their own problems. because of the ternary (which requires a boxing

    // ambiguous without the call to .booleanValue to unbox the Boolean
    checkState(boxedBoolean.booleanValue(), "", 1);
    // ambiguous without the cast to Object because the boxed predicate prevents any overload from
    // being selected in phase 1
    checkState(boxedBoolean, "", (Object) boxedLong);

    // ternaries introduce their own problems. because of the ternary (which requires a boxing

        ArgumentCaptor<Smb2IoctlRequest> cap = ArgumentCaptor.forClass(Smb2IoctlRequest.class);
        verify(tree).send(cap.capture(), eq(RequestParam.NO_RETRY));
        assertNotNull(cap.getValue()); // captured request should be present
    }

    @Test
    @DisplayName("sendrecv uses TransactNamedPipe when PIPE_TYPE_TRANSACT is set")
    void sendrecv_transact_branch() throws Exception {
        // Arrange

		if baseDN.Parsed.AncestorOf(gdn) {
			return true
		}
	}
	return false
}

// GetNonEligibleUserDistNames - find user accounts (DNs) that are no longer
// present in the LDAP server or do not meet filter criteria anymore
func (l *Config) GetNonEligibleUserDistNames(userDistNames []string) ([]string, error) {
	conn, err := l.LDAP.Connect()
	if err != nil {
		return nil, err
	}

使用 `async` 和 `await` 的風格在語言中相對較新。

但它使處理非同步程式碼變得更加容易。

相同的語法（或幾乎相同的語法）最近也被包含在現代 JavaScript（無論是瀏覽器還是 NodeJS）中。

但在此之前，處理非同步程式碼要更加複雜和困難。

在較舊的 Python 版本中，你可能會使用多執行緒或 [Gevent](https://www.gevent.org/)。但這些程式碼要更難以理解、調試和思考。

在較舊的 NodeJS / 瀏覽器 JavaScript 中，你會使用「回呼」，這可能會導致“回呼地獄”。

## 協程 { #coroutines }

「協程」只是 `async def` 函式所回傳的非常特殊的事物名稱。Python 知道它是一個類似函式的東西，可以啟動它，並且在某個時刻它會結束，但它也可能在內部暫停 ⏸，只要遇到 `await`。

这种使用 `async` 和 `await` 的风格在语言中相对较新。

但它使处理异步代码变得容易很多。

这种相同的语法（或几乎相同）最近也包含在现代版本的 JavaScript 中（在浏览器和 NodeJS 中）。

但在此之前，处理异步代码非常复杂和困难。

在以前版本的 Python，你可以使用多线程或者 [Gevent](https://www.gevent.org/)。但代码的理解、调试和思考都要复杂许多。

在以前版本的 NodeJS / 浏览器 JavaScript 中，你会使用"回调"，因此也可能导致“回调地狱”。

## 协程 { #coroutines }

 * supports `http` and `https`. Use [java.net.URI][URI] for URLs with arbitrary schemes.
 *
 * ### Username and Password
 *
 * Username and password are either present, or the empty string `""` if absent. This class offers
 * no mechanism to differentiate empty from absent. Neither of these components are popular in

    server.source.close()
    assertThat(client.webSocket!!.send("Hello!")).isTrue()
    taskFaker.runTasks()
    client.listener.assertFailure(IOException::class.java, "source is closed")

    // A failed write prevents further use of the WebSocket instance.
    assertThat(client.webSocket!!.send("Hello!")).isFalse()
    assertThat(client.webSocket!!.pong("Ping!".encodeUtf8())).isFalse()
  }

  @Test