server.requestClientAuth()
    server.enqueue(
      MockResponse
        .Builder()
        .body("abc")
        .build(),
    )
    val call = client.newCall(Request.Builder().url(server.url("/")).build())
    val response = call.execute()
    assertThat(response.handshake!!.peerPrincipal)
      .isEqualTo(X500Principal("CN=Local Host"))
    assertThat(response.handshake!!.localPrincipal)

	return c.call(ctx, lockRPCRLock, &args)
}

// Lock calls lock REST API.
func (c *lockRESTClient) Lock(ctx context.Context, args dsync.LockArgs) (reply bool, err error) {
	return c.call(ctx, lockRPCLock, &args)
}

// RUnlock calls read unlock REST API.
func (c *lockRESTClient) RUnlock(ctx context.Context, args dsync.LockArgs) (reply bool, err error) {
	return c.call(ctx, lockRPCRUnlock, &args)
}

// Stat captures time taken to call os.Stat
func Stat(name string) (info os.FileInfo, err error) {
	defer updateOSMetrics(osMetricStat, name)(err)
	return os.Stat(name)
}

// Create captures time taken to call os.Create
func Create(name string) (f *os.File, err error) {
	defer updateOSMetrics(osMetricCreate, name)(err)
	return os.Create(name)
}

// Fdatasync captures time taken to call Fdatasync

	if err != nil {
		return nil, toStorageErr(err)
	}
	return respBody, nil
}

// Wrapper to restClient.Call to handle network errors, in case of network error the connection is disconnected
// and a healthcheck routine gets invoked that would reconnect.
func (client *storageRESTClient) call(ctx context.Context, rpcMethod string, values url.Values, body io.Reader, length int64) (io.ReadCloser, error) {
	if values == nil {

An example could be that you have an external authentication provider that you need to call.

You send it a token and it returns an authenticated user.

This provider might be charging you per request, and calling it might take some extra time than if you had a fixed mock user for tests.

You probably want to test the external provider once, but not necessarily call it for every test that runs.

   * [synchronously][Call.execute] and [asynchronously][Call.enqueue].
   */
  @Synchronized
  fun cancelAll() {
    for (call in readyAsyncCalls) {
      call.call.cancel()
    }
    for (call in runningAsyncCalls) {
      call.call.cancel()
    }
    for (call in runningSyncCalls) {
      call.cancel()
    }
  }

  /**

 *
 * Each instance processes a single event on [call], and then adds a successor [EventListenerRelay]
 * on the same [call] to process the next event.
 *
 * By forcing the list of listeners to change after every event, we can detect if buggy code caches
 * a stale [EventListener] in a field or local variable.
 */
class EventListenerRelay(
  val call: Call,
  val eventRecorder: EventRecorder,
) {

 * (unless there are {@link Double#NaN NaN} values, see below); otherwise, the result is the average
 * of the values which would appear at the indexes floor(x) and ceil(x) weighted by (1-frac(x)) and
 * frac(x) respectively. This is the same definition as used by Excel and by S, it is the Type 7
 * definition in <a

    public int[] batchInsert(List<CrawlingInfo> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchInsert(list, call, null);
    }

    public int[] batchInsert(List<CrawlingInfo> list, RequestOptionCall<BulkRequestBuilder> call,
            RequestOptionCall<IndexRequestBuilder> entityCall) {
        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchInsert(List<ElevateWord> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchInsert(list, call, null);
    }

    public int[] batchInsert(List<ElevateWord> list, RequestOptionCall<BulkRequestBuilder> call,
            RequestOptionCall<IndexRequestBuilder> entityCall) {
        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }