*   <li>Each other step is derived from one or more input steps. At each step, zero or more objects
 *       can be captured for later closing.
 *   <li>There is one last step (the root of the tree), from which you can extract the final result
 *       of the computation. After that result is available (or the computation fails), all objects
 *       captured by any of the steps in the pipeline are closed.
 * </ol>
 *
 * <h3>Starting a pipeline</h3>
 *

		metrics = make([]MetricV2, 0, 50)
		dataUsageInfo, err := loadDataUsageFromBackend(ctx, objLayer)
		if err != nil {
			metricsLogIf(ctx, err)
			return metrics
		}

		// data usage has not captured any data yet.
		if dataUsageInfo.LastUpdate.IsZero() {
			return metrics
		}

		metrics = append(metrics, MetricV2{
			Description: getUsageLastScanActivityMD(),

      client.newCall(request).execute()
    }
  }

  @Test
  fun interceptorGetsHttp2() {
    platform.assumeHttp2Support()
    enableProtocol(Protocol.HTTP_2)

    // Capture the protocol as it is observed by the interceptor.
    val protocolRef = AtomicReference<Protocol?>()
    val interceptor =
      Interceptor { chain: Interceptor.Chain ->

	"github.com/minio/minio/internal/auth"
	"github.com/minio/minio/internal/hash/sha256"
	xhttp "github.com/minio/minio/internal/http"
	ioutilx "github.com/minio/minio/internal/ioutil"
)

// Type to capture different modifications to API request to simulate failure cases.
type Fault int

const (
	None Fault = iota
	MissingContentLength
	TooBigObject
	TooBigDecodedLength
	BadSignature
	BadMD5
	MissingUploadID

way to change them--' when she was a little startled by seeing
the Cheshire Cat sitting on a bough of a tree a few yards off.

  The Cat only grinned when it saw Alice.  It looked good-
natured, she thought:  still it had VERY long claws and a great
many teeth, so she felt that it ought to be treated with respect.

  `Cheshire Puss,' she began, rather timidly, as she did not at

way to change them--' when she was a little startled by seeing
the Cheshire Cat sitting on a bough of a tree a few yards off.

  The Cat only grinned when it saw Alice.  It looked good-
natured, she thought:  still it had VERY long claws and a great
many teeth, so she felt that it ought to be treated with respect.

  `Cheshire Puss,' she began, rather timidly, as she did not at