*
 *
 */
@Deprecated
public class MetadataGraphNode {
    /** node payload */
    MavenArtifactMetadata metadata;

    /** nodes, incident to this (depend on me) */
    List<MetadataGraphNode> inNodes;

    /** nodes, exident to this (I depend on) */
    List<MetadataGraphNode> exNodes;

    public MetadataGraphNode() {
        inNodes = new ArrayList<>(4);
        exNodes = new ArrayList<>(8);
    }

  }

  override fun dnsStart(
    call: Call,
    domainName: String,
  ) {
    logWithTime("dnsStart: $domainName")
  }

  override fun dnsEnd(
    call: Call,
    domainName: String,
    inetAddressList: List<InetAddress>,
  ) {
    logWithTime("dnsEnd: $inetAddressList")
  }

  override fun connectStart(
    call: Call,
    inetSocketAddress: InetSocketAddress,
    proxy: Proxy,
  ) {

   *
   * <p><b>Warning: do not depend</b> on the behavior of this method.
   *
   * <p>Historically, {@code Function} instances in this library have implemented this method to
   * recognize certain cases where distinct {@code Function} instances would in fact behave
   * identically. However, as code migrates to {@code java.util.function}, that behavior will
   * disappear. It is best not to depend on it.
   */
  @Override

/// tip | Dica

Um arquivo começando com um ponto (`.`) é um arquivo oculto em sistemas tipo Unix, como Linux e macOS.

Mas um arquivo dotenv não precisa ter exatamente esse nome de arquivo.

///

# This is more or less a workaround to make Depends and Security hashable
# as other tools that use them depend on that
# Ref: https://github.com/fastapi/fastapi/pull/14320

from fastapi import Depends, Security


def dep():
    pass


def test_depends_hashable():
    dep()  # just for coverage
    d1 = Depends(dep)
    d2 = Depends(dep)
    d3 = Depends(dep, scope="function")
    d4 = Depends(dep, scope="function")

   *
   * <p><b>Warning: do not depend</b> on the behavior of this method.
   *
   * <p>Historically, {@code Supplier} instances in this library have implemented this method to
   * recognize certain cases where distinct {@code Supplier} instances would in fact behave
   * identically. However, as code migrates to {@code java.util.function}, that behavior will
   * disappear. It is best not to depend on it.
   */
  @Override

    // JDK 14
    // CallStart, ProxySelectStart, ProxySelectEnd, DnsStart, DnsEnd, ConnectStart, SecureConnectStart,
    // SecureConnectEnd, ConnectEnd, ConnectionAcquired, RequestHeadersStart, RequestHeadersEnd,
    // ResponseFailed, ConnectionReleased, CallFailed
    // JDK 8
    // CallStart, ProxySelectStart, ProxySelectEnd, DnsStart, DnsEnd, ConnectStart, SecureConnectStart,
    // ConnectFailed, CallFailed
    // Gradle - JDK 11

這種作法很常見，這些環境變數通常放在 `.env` 檔中，而該檔案被稱為「dotenv」。

/// tip

在類 Unix 系統（如 Linux 與 macOS）中，以點（`.`）開頭的檔案是隱藏檔。

但 dotenv 檔並不一定必須使用這個確切的檔名。

///

Pydantic 透過外部函式庫支援讀取這類型的檔案。你可以閱讀更多：[Pydantic Settings：Dotenv (.env) 支援](https://docs.pydantic.dev/latest/concepts/pydantic_settings/#dotenv-env-support)。

/// tip

要讓這個功能運作，你需要 `pip install python-dotenv`。

///

### `.env` 檔 { #the-env-file }

				for i := range responses {
					toSend := GetByteBuffer()[:0]
					toSend = append(toSend, byte(i))
					toSend = append(toSend, payload...)
					select {
					case <-ctx.Done():
						return nil
					case out <- toSend:
					}
				}
				return nil
			},

			Subroute:    "some-subroute",

    }

    @Override public void dnsStart(Call call, String domainName) {
      printEvent("dnsStart");
    }

    @Override public void dnsEnd(Call call, String domainName, List<InetAddress> inetAddressList) {
      printEvent("dnsEnd");
    }

    @Override public void connectStart(
        Call call, InetSocketAddress inetSocketAddress, Proxy proxy) {
      printEvent("connectStart");
    }