public static final fun get (Lokhttp3/TlsVersion;Lokhttp3/CipherSuite;Ljava/util/List;Ljava/util/List;)Lokhttp3/Handshake;
	public fun hashCode ()I
	public final fun localCertificates ()Ljava/util/List;
	public final fun localPrincipal ()Ljava/security/Principal;
	public final fun peerCertificates ()Ljava/util/List;
	public final fun peerPrincipal ()Ljava/security/Principal;

   * @param throwable the non-null {@code Throwable} to extract causes from
   * @return an unmodifiable list containing the cause chain starting with {@code throwable}
   * @throws IllegalArgumentException if there is a loop in the causal chain
   */
  public static List<Throwable> getCausalChain(Throwable throwable) {
    checkNotNull(throwable);
    List<Throwable> causes = new ArrayList<>(4);
    causes.add(throwable);

type MySQLArgs struct {
	Enable             bool     `json:"enable"`
	Format             string   `json:"format"`
	DSN                string   `json:"dsnString"`
	Table              string   `json:"table"`
	Host               xnet.URL `json:"host"`
	Port               string   `json:"port"`
	User               string   `json:"user"`
	Password           string   `json:"password"`
	Database           string   `json:"database"`

    OkHttpClientTestRule().apply {
      recordFrames = true
      // recordSslDebug = true
    }

  // https://tools.ietf.org/html/rfc6066#page-6 specifies a FQDN is required.
  val hostname = "local.host"
  private val handshakeCertificates =
    run {
      // Generate a self-signed cert for the server to serve and the client to trust.
      val heldCertificate =
        HeldCertificate.Builder()

  private var promises = mutableListOf<PushPromise>()
  var settings: Settings = Settings()
    private set
  var webSocketListener: WebSocketListener? = null
    private set

  val pushPromises: List<PushPromise>
    get() = promises

  init {
    setResponseCode(200)
    setHeader("Content-Length", 0L)
  }

  public override fun clone(): MockResponse {
    val result = super.clone() as MockResponse

            closeResources(httpRequest, responseData);
            throw new CrawlingAccessException("Unknown host(" + e.getMessage() + "): " + url, e);
        } catch (final NoRouteToHostException e) {
            closeResources(httpRequest, responseData);
            throw new CrawlingAccessException("No route to host(" + e.getMessage() + "): " + url, e);
        } catch (final ConnectException e) {

  }

  /**
   * Moves the last entry in the entry array into {@code dstIndex}, and nulls out its old position.
   */
  void moveLastEntry(int dstIndex, int mask) {
    Object table = requireTable();
    int[] entries = requireEntries();
    @Nullable Object[] elements = requireElements();
    int srcIndex = size() - 1;
    if (dstIndex < srcIndex) {
      // move last entry to deleted spot

#### 操作

这里的「操作」指的是一种 HTTP「方法」。

下列之一：

* `POST`
* `GET`
* `PUT`
* `DELETE`

...以及更少见的几种：

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

在 HTTP 协议中，你可以使用以上的其中一种（或多种）「方法」与每个路径进行通信。

---

在开发 API 时，你通常使用特定的 HTTP 方法去执行特定的行为。

通常使用：

* `POST`：创建数据。
* `GET`：读取数据。
* `PUT`：更新数据。
* `DELETE`：删除数据。

import java.io.Serializable;
import java.util.AbstractMap;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collector;
import java.util.stream.Stream;

                If the servers `list` is not provided, or is an empty `list`, the
                default value would be a `dict` with a `url` value of `/`.

                Each item in the `list` is a `dict` containing:

                * `url`: A URL to the target host. This URL supports Server Variables
                and MAY be relative, to indicate that the host location is relative