```java
import org.codelibs.curl.Curl;

Curl.post("https://api.example.com/items")
    .body("{\"name\":\"item1\"}")
    .header("Content-Type", "application/json")
    .execute(
        response -> System.out.println("Async status: " + response.getHttpStatusCode()),
        error -> error.printStackTrace());
```

## API Overview

#28a745;\n}\n\n.card-success:not(.card-outline) > .card-header,\n.card-success:not(.card-outline) > .card-header a {\n  color: #fff;\n}\n\n.card-success:not(.card-outline) > .card-header a.active {\n  color: #1f2d3d;\n}\n\n.card-success.card-outline {\n  border-top: 3px solid #28a745;\n}\n\n.card-success.card-outline-tabs > .card-header a:hover {\n  border-top: 3px solid #dee2e6;\n}\n\n.card-success.card-outline-tabs > .card-header a.active,\n.card-success.card-outline-tabs > .card-header a.active:hover {\n...

import static org.junit.Assert.fail;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;

import org.codelibs.curl.Curl;
import org.junit.After;
import org.junit.Test;

/**
 * Test class for ContentCache.
 * Tests memory-based and file-based content caching.
 */
public class ContentCacheTest {

    private File tempFile;

            <div class="row">
                <div class="col-md-12">
                    <div class="card card-outline card-primary">
                        <div class="card-header">
                            <jsp:include page="/WEB-INF/view/common/admin/crud/header.jsp"></jsp:include>
                        </div>
                        <div class="card-body">
                            <%-- Message --%>
                            <div>

                        <div
                                class="card card-outline <c:if test="${crudMode == 1 || crudMode == 2}">card-success</c:if><c:if test="${crudMode == 3}">card-danger</c:if><c:if test="${crudMode == 4}">card-primary</c:if>">
                                <%-- Card Header --%>
                            <div class="card-header">

                        <div
                                class="card card-outline <c:if test="${crudMode == 1 || crudMode == 2}">card-success</c:if><c:if test="${crudMode == 3}">card-danger</c:if><c:if test="${crudMode == 4}">card-primary</c:if>">
                                <%-- Card Header --%>
                            <div class="card-header">
                                <h3 class="card-title">

        .setSocketPolicy(SocketPolicy.STALL_SOCKET_AT_START),
    )
    server.start()
    val call =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .build(),
      )
    call.enqueue(
      object : Callback {
        override fun onFailure(
          call: Call,
          e: okio.IOException,
        ) {
          callFailure.complete(e)
        }

  @ValueSource(booleans = [true, false])
  fun successfulCallEventSequence() {
    server!!.enqueue(MockResponse(body = "abc"))
    val call =
      client.newCall(
        Request
          .Builder()
          .url(server!!.url("/"))
          .build(),
      )
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("abc")
    response.body.close()

                <div class="col-md-12">
                    <div class="card card-outline card-primary">
                        <div class="card-header">
                            <h3 class="card-title">
                                <la:message key="labels.dict_kuromoji_list_link"/>
                            </h3>
                            <div class="card-tools">
                                <div class="btn-group">

        override fun requestHeadersEnd(
          call: Call,
          request: Request,
        ) = TODO()

        override fun requestBodyStart(call: Call) = TODO()

        override fun requestBodyEnd(
          call: Call,
          byteCount: Long,
        ) = TODO()

        override fun requestFailed(
          call: Call,
          ioe: IOException,