with OkHttp 3.x: must use `object :` with OkHttp 4.x:

Kotlin calling OkHttp 3.x:

```kotlin
val client = OkHttpClient.Builder()
    .dns { hostname -> InetAddress.getAllByName(hostname).toList() }
    .build()
```

Kotlin calling OkHttp 4.x:

```kotlin
val client = OkHttpClient.Builder()
    .dns(object : Dns {
      override fun lookup(hostname: String) =

}

func handleDateDiff(r Record, d *DateDiffFunc, tableAlias string) (*Value, error) {
	tval1, err := d.Timestamp1.evalNode(r, tableAlias)
	if err != nil {
		return nil, err
	}
	if err = inferTypeAsTimestamp(tval1); err != nil {
		return nil, err
	}
	ts1, ok := tval1.ToTimestamp()
	if !ok {
		return nil, fmt.Errorf("%s() expects two timestamp arguments", sqlFnDateDiff)
	}

    override val call: Call,
  ) : CallEvent()

  data class CacheConditionalHit(
    override val timestampNs: Long,
    override val call: Call,
  ) : CallEvent()

  data class RetryDecision(
    override val timestampNs: Long,
    override val call: Call,
    val exception: IOException,
    val retry: Boolean,
  ) : CallEvent()

  data class FollowUpDecision(

        val model = setupModelFor("release")

        val sanityCheck = model.findBuildTypeByName("SanityCheck")
        val steps = sanityCheck.steps.items
        val gradleBuildStep = gradleStep(steps, 0)
        gradleBuildStep.assertTasks("tasks")
    }

    @Test
    fun `nightly promotion build type runs three gradle invocations`() {
        val model = setupModelFor("release")

const val MAX_TEST_PROJECTS_PER_BUCKET = 10
const val PERFORMANCE_TEST_SPLIT_DIRECTORY_NAME = "performance-test-splits"

data class PerformanceTestSpec(
    val performanceTestType: PerformanceTestType,
    val os: Os,
)

class StatisticsBasedPerformanceTestBucketProvider(
    private val model: CIBuildModel,
    performanceTestDurationsJson: File,

@Tag("Slow")
class InterceptorTest {
  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  @StartStop
  private val server = MockWebServer()

  private var client = clientTestRule.newClient()
  private val callback = RecordingCallback()

  @Test
  fun applicationInterceptorsCanShortCircuitResponses() {
    server.close() // Accept no connections.
    val request =
      Request
        .Builder()

  }

  @Test fun `sequence of`() {
    val bytes = "3009020107020108020109".decodeHex()
    val sequenceOf = listOf(7L, 8L, 9L)
    val adapter = Adapters.INTEGER_AS_LONG.asSequenceOf()
    assertThat(adapter.fromDer(bytes)).isEqualTo(sequenceOf)
    assertThat(adapter.toDer(sequenceOf)).isEqualTo(bytes)
  }

  @Test fun `point with only x set`() {
    val bytes = "3003800109".decodeHex()
    val point = Point(9L, null)

    val deflater = MessageDeflater(false)
    val inflater = MessageInflater(false)

    val goldenValue = "".encodeUtf8()

    val deflated = deflater.deflate(goldenValue)
    assertThat(deflated).isEqualTo("00".decodeHex())
    val inflated = inflater.inflate(deflated)

    assertThat(inflated).isEqualTo(goldenValue)
  }

  @Test fun `inflate deflate with context takeover`() {

import okio.buffer
import okio.use
import org.junit.jupiter.api.Test

class RequestTest {
  @Test
  fun constructor() {
    val url = "https://example.com/".toHttpUrl()
    val body = "hello".toRequestBody()
    val headers = headersOf("User-Agent", "RequestTest")
    val method = "PUT"
    val request =
      Request(
        url = url,
        headers = headers,
        method = method,
        body = body,
      )

import okhttp3.internal.EmptyTags

class RequestCommonTest {
  @Test
  fun constructorNormal() {
    val url = "https://example.com/".toHttpUrl()
    val body = "hello".toRequestBody()
    val headers = headersOf("User-Agent", "RequestTest")
    val method = "PUT"
    val request =
      Request(
        url = url,
        headers = headers,
        method = method,
        body = body,
      )