override val call: Call,
  ) : CallEvent()

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

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

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

import mockwebserver3.MockWebServer
import mockwebserver3.SocketEffect.CloseSocket
import mockwebserver3.junit5.StartStop
import okhttp3.CallEvent.CacheConditionalHit
import okhttp3.CallEvent.CacheHit
import okhttp3.CallEvent.CacheMiss
import okhttp3.CallEvent.CallEnd
import okhttp3.CallEvent.CallFailed
import okhttp3.CallEvent.CallStart
import okhttp3.CallEvent.Canceled
import okhttp3.CallEvent.ConnectEnd
import okhttp3.CallEvent.ConnectFailed

        .build()

    val client = OkHttpClient.Builder()
        .sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager)
        .build()
    ```

 *  New: Add `cacheHit`, `cacheMiss`, and `cacheConditionalHit()` events to `EventListener`. Use
    these in logs, metrics, and even test cases to confirm your cache headers are configured as
    expected.

    // Different request, but Vary says it doesn't matter.
    Thread.sleep(10) // Make sure the timestamps are unique.
    val request2SentAt = System.currentTimeMillis()
    val cacheMiss =
      executeSynchronously(
        "/",
        "Accept-Language",
        "en-US",
        "Accept-Charset",
        "UTF-8",
      )
    val request2ReceivedAt = System.currentTimeMillis()

        }
    }

    if (cacheResponse != null) {
      chain.eventListener.cacheConditionalHit(call, cacheResponse)
    } else if (cache != null) {
      chain.eventListener.cacheMiss(call)
    }

    var networkResponse: Response? = null
    try {
      networkResponse = chain.proceed(networkRequest)
    } finally {
      // If we're crashing on I/O or otherwise, don't leak the cache body.

	public static final field NONE Lokhttp3/EventListener;
	public fun <init> ()V
	public fun cacheConditionalHit (Lokhttp3/Call;Lokhttp3/Response;)V
	public fun cacheHit (Lokhttp3/Call;Lokhttp3/Response;)V
	public fun cacheMiss (Lokhttp3/Call;)V
	public fun callEnd (Lokhttp3/Call;)V
	public fun callFailed (Lokhttp3/Call;Ljava/io/IOException;)V
	public fun callStart (Lokhttp3/Call;)V
	public fun canceled (Lokhttp3/Call;)V

	public static final field NONE Lokhttp3/EventListener;
	public fun <init> ()V
	public fun cacheConditionalHit (Lokhttp3/Call;Lokhttp3/Response;)V
	public fun cacheHit (Lokhttp3/Call;Lokhttp3/Response;)V
	public fun cacheMiss (Lokhttp3/Call;)V
	public fun callEnd (Lokhttp3/Call;)V
	public fun callFailed (Lokhttp3/Call;Ljava/io/IOException;)V
	public fun callStart (Lokhttp3/Call;)V
	public fun canceled (Lokhttp3/Call;)V

 * A BuildService which monitors a few tasks (in both build-logic and main build) and collects information for Build Scan.
 * It's currently implemented by two use cases:
 * 1. Collect cache misses for compilation tasks and publish a `CACHE_MISS` tag for a Build Scan.
 * 2. Collect failed task paths and display a link which points to the corresponding task in the Build Scan, like `https://ge.gradle.org/s/xxx/console-log?task=yyy`.
 */

public class DirectoryCacheStatistics {
    private final AtomicLong cacheHits = new AtomicLong();
    private final AtomicLong cacheMisses = new AtomicLong();
    private final AtomicLong cacheInvalidations = new AtomicLong();
    private final AtomicLong changeNotifications = new AtomicLong();
    
    public double getCacheHitRatio() {
        long hits = cacheHits.get();
        long misses = cacheMisses.get();