return valueField;
  }

  /** Returns the head of the listener stack, using a volatile read. */
  final @Nullable Listener listeners() {
    return listenersField;
  }

  /** Releases all threads in the {@link #waitersField} list, and clears the list. */
  final void releaseWaiters() {
    Waiter head = gasWaiters(Waiter.TOMBSTONE);
    for (Waiter currentWaiter = head; currentWaiter != null; currentWaiter = currentWaiter.next) {

    return valueField;
  }

  /** Returns the head of the listener stack, using a volatile read. */
  final @Nullable Listener listeners() {
    return listenersField;
  }

  /** Releases all threads in the {@link #waitersField} list, and clears the list. */
  final void releaseWaiters() {
    Waiter head = gasWaiters(Waiter.TOMBSTONE);
    for (Waiter currentWaiter = head; currentWaiter != null; currentWaiter = currentWaiter.next) {

    List<E> head = list.subList(0, size - 1);
    List<E> tail = list.subList(1, size);
    assertEquals(list.get(0), copy.get(0));
    assertEquals(list.get(size - 1), copy.get(size - 1));
    assertEquals(list.get(1), tail.get(0));
    assertEquals(list.get(size - 1), tail.get(size - 2));
    assertEquals(list.get(0), head.get(0));
    assertEquals(list.get(size - 2), head.get(size - 2));

    Node<K, V> head;
    Node<K, V> tail;
    int count;

    KeyList(Node<K, V> firstNode) {
      this.head = firstNode;
      this.tail = firstNode;
      firstNode.previousSibling = null;
      firstNode.nextSibling = null;
      this.count = 1;
    }
  }

  private transient @Nullable Node<K, V> head; // the head for all keys

  <modelVersion>4.0.0</modelVersion>

  <groupId>com.google.guava</groupId>
  <artifactId>guava-bom</artifactId>
  <version>999.0.0-HEAD-jre-SNAPSHOT</version>
  <packaging>pom</packaging>

  <name>Guava BOM</name>
  <description>BOM for Guava artifacts</description>
  <url>https://github.com/google/guava</url>
  <inceptionYear>2010</inceptionYear>

        .get()
        .build()
    assertThat(get.method).isEqualTo("GET")
    assertThat(get.body).isNull()

    val head =
      Request
        .Builder()
        .url("http://localhost/api")
        .head()
        .build()
    assertThat(head.method).isEqualTo("HEAD")
    assertThat(head.body).isNull()

    val delete =
      Request
        .Builder()
        .url("http://localhost/api")

	<scm>
		<connection>scm:git:******@****.***:codelibs/corelib.git</connection>
		<url>scm:git:******@****.***:codelibs/corelib.git</url>
		<developerConnection>scm:git:******@****.***:codelibs/corelib.git</developerConnection>
	  <tag>HEAD</tag>
  </scm>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>
	<build>
		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>

                    if (fessConfig.isSmbRoleFromFile() || fessConfig.isFileRoleFromFile() || fessConfig.isFtpRoleFromFile()) {
                        // head method
                        responseData =
                                client.execute(RequestDataBuilder.newRequestData().head().url(url).weight(urlQueue.getWeight()).build());
                        if (responseData == null) {
                            return true;

            ListTestSuiteBuilder.using(new DoublesAsListGenerator()).named("Doubles.asList"),
            ListTestSuiteBuilder.using(new DoublesAsListHeadSubListGenerator())
                .named("Doubles.asList, head subList"),
            ListTestSuiteBuilder.using(new DoublesAsListTailSubListGenerator())
                .named("Doubles.asList, tail subList"),
            ListTestSuiteBuilder.using(new DoublesAsListMiddleSubListGenerator())

        value.isEmpty() -> removeHeader("Cache-Control")
        else -> header("Cache-Control", value)
      }
    }

    open fun get(): Builder = method("GET", null)

    open fun head(): Builder = method("HEAD", null)

    open fun post(body: RequestBody): Builder = method("POST", body)

    @JvmOverloads
    open fun delete(body: RequestBody? = RequestBody.EMPTY): Builder = method("DELETE", body)