diff --git a/go.mod b/go.mod
index af82539460b..f8d1b2080c6 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,8 @@ go 1.15
 
 require (
 	cloud.google.com/go/compute v1.2.0
+	cloud.google.com/go/iam v0.2.0 // indirect
+	cloud.google.com/go/storage v1.10.0
 	github.com/golang/protobuf v1.5.2
 	github.com/google/go-cmp v0.5.7
 	github.com/google/martian/v3 v3.2.1
diff --git a/go.sum b/go.sum
index d17780f11a4..aff422ca48b 100644
--- a/go.sum
+++ b/go.sum
@@ -38,6 +38,8 @@ cloud.google.com/go/compute v1.2.0 h1:EKki8sSdvDU0OO9mAXGwPXOTOgPz2l08R0/IutDH11
 cloud.google.com/go/compute v1.2.0/go.mod h1:xlogom/6gr8RJGBe7nT2eGsQYAFUbbv8dbC29qE3Xmw=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
+cloud.google.com/go/iam v0.2.0 h1:Ouq6qif4mZdXkb3SiFMpxvu0JQJB1Yid9TsZ23N6hg8=
+cloud.google.com/go/iam v0.2.0/go.mod h1:BCK88+tmjAwnZYfOSizmKCTSFjJHCa18t3DpdGEY13Y=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
 cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
@@ -46,6 +48,7 @@ cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiy
 cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
+cloud.google.com/go/storage v1.10.0 h1:STgFzyU5/8miMl0//zKh2aQeTyeaUH3WN9bSUiJ09bA=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
@@ -348,6 +351,7 @@ golang.org/x/sys v0.0.0-20211124211545-fe61309f8881/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20211210111614-af8b64212486/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220128215802-99c3d69c2c27/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220209214540-3681064d5158 h1:rm+CHSpPEEW2IsXUib1ThaHIjuBVZjxNgSKmBLFfD4c=
 golang.org/x/sys v0.0.0-20220209214540-3681064d5158/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
@@ -453,6 +457,7 @@ google.golang.org/api v0.57.0/go.mod h1:dVPlbZyBo2/OjBpmvNdpn2GRm6rPy75jyU7bmhdr
 google.golang.org/api v0.61.0/go.mod h1:xQRti5UdCmoCEqFxcz93fTl338AVqDgyaDRuOZ3hg9I=
 google.golang.org/api v0.63.0/go.mod h1:gs4ij2ffTRXwuzzgJl/56BdwJaA194ijkfn++9tDuPo=
 google.golang.org/api v0.66.0/go.mod h1:I1dmXYpX7HGwz/ejRxwQp2qj5bFAz93HiCU1C1oYd9M=
+google.golang.org/api v0.67.0/go.mod h1:ShHKP8E60yPsKNw/w8w+VYaj9H6buA5UqDp8dhbQZ6g=
 google.golang.org/api v0.69.0 h1:yHW5s2SFyDapr/43kYtIQmoaaFVW4baLMLwqV4auj2A=
 google.golang.org/api v0.69.0/go.mod h1:boanBiw+h5c3s+tBPgEzLDRHfFLWV0qXxRHz3ws7C80=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
@@ -524,7 +529,9 @@ google.golang.org/genproto v0.0.0-20211206160659-862468c7d6e0/go.mod h1:5CzLGKJ6
 google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/genproto v0.0.0-20211221195035-429b39de9b1c/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/genproto v0.0.0-20220114231437-d2e6a121cae0/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20220126215142-9970aeb2e350/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/genproto v0.0.0-20220201184016-50beb8ab5c44/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20220207164111-0872dc986b00/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/genproto v0.0.0-20220211171837-173942840c17/go.mod h1:kGP+zUP2Ddo0ayMi4YuN7C3WZyJvGLZRh8Z5wnAqvEI=
 google.golang.org/genproto v0.0.0-20220222154240-daf995802d7b h1:wHqTlwZVR0x5EG2S6vKlCq63+Tl/vBoQELitHxqxDOo=
 google.golang.org/genproto v0.0.0-20220222154240-daf995802d7b/go.mod h1:kGP+zUP2Ddo0ayMi4YuN7C3WZyJvGLZRh8Z5wnAqvEI=
diff --git a/httpreplay/cmd/httpr/integration_test.go b/httpreplay/cmd/httpr/integration_test.go
index b8aed7c4dc5..0b1915d48b5 100644
--- a/httpreplay/cmd/httpr/integration_test.go
+++ b/httpreplay/cmd/httpr/integration_test.go
@@ -17,215 +17,215 @@
 
 package main_test
 
-// import (
-// 	"context"
-// 	"crypto/tls"
-// 	"crypto/x509"
-// 	"errors"
-// 	"fmt"
-// 	"io/ioutil"
-// 	"net"
-// 	"net/http"
-// 	"net/url"
-// 	"os"
-// 	"os/exec"
-// 	"strings"
-// 	"testing"
-// 	"time"
-
-// 	"cloud.google.com/go/internal/testutil"
-// 	"cloud.google.com/go/storage"
-// 	"golang.org/x/oauth2"
-// 	"google.golang.org/api/option"
-// )
-
-// const initial = "initial state"
-
-// func TestIntegration_HTTPR(t *testing.T) {
-// 	if testing.Short() {
-// 		t.Skip("Integration tests skipped in short mode")
-// 	}
-// 	if testutil.ProjID() == "" {
-// 		t.Fatal("set GCLOUD_TESTS_GOLANG_PROJECT_ID and GCLOUD_TESTS_GOLANG_KEY")
-// 	}
-// 	// Get a unique temporary filename.
-// 	f, err := ioutil.TempFile("", "httpreplay")
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	replayFilename := f.Name()
-// 	if err := f.Close(); err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	defer os.Remove(replayFilename)
-
-// 	if err := exec.Command("go", "build").Run(); err != nil {
-// 		t.Fatalf("running 'go build': %v", err)
-// 	}
-// 	defer os.Remove("./httpr")
-// 	want := runRecord(t, replayFilename)
-// 	got := runReplay(t, replayFilename)
-// 	if got != want {
-// 		t.Fatalf("got %q, want %q", got, want)
-// 	}
-// }
-
-// func runRecord(t *testing.T, filename string) string {
-// 	cmd, tr, cport, err := start("-record", filename)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	defer stop(t, cmd)
-
-// 	ctx := context.Background()
-// 	hc := &http.Client{
-// 		Transport: &oauth2.Transport{
-// 			Base:   tr,
-// 			Source: testutil.TokenSource(ctx, storage.ScopeFullControl),
-// 		},
-// 	}
-// 	res, err := http.Post(
-// 		fmt.Sprintf("http://localhost:%s/initial", cport),
-// 		"text/plain",
-// 		strings.NewReader(initial))
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	if res.StatusCode != 200 {
-// 		t.Fatalf("from POST: %s", res.Status)
-// 	}
-// 	info, err := getBucketInfo(ctx, hc)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	return info
-// }
-
-// func runReplay(t *testing.T, filename string) string {
-// 	cmd, tr, cport, err := start("-replay", filename)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	defer stop(t, cmd)
-
-// 	hc := &http.Client{Transport: tr}
-// 	res, err := http.Get(fmt.Sprintf("http://localhost:%s/initial", cport))
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	if res.StatusCode != 200 {
-// 		t.Fatalf("from GET: %s", res.Status)
-// 	}
-// 	bytes, err := ioutil.ReadAll(res.Body)
-// 	res.Body.Close()
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	if got, want := string(bytes), initial; got != want {
-// 		t.Errorf("initial: got %q, want %q", got, want)
-// 	}
-// 	info, err := getBucketInfo(context.Background(), hc)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	return info
-// }
-
-// // Start the proxy binary and wait for it to come up.
-// // Return a transport that talks to the proxy, as well as the control port.
-// // modeFlag must be either "-record" or "-replay".
-// func start(modeFlag, filename string) (*exec.Cmd, *http.Transport, string, error) {
-// 	pport, err := pickPort()
-// 	if err != nil {
-// 		return nil, nil, "", err
-// 	}
-// 	cport, err := pickPort()
-// 	if err != nil {
-// 		return nil, nil, "", err
-// 	}
-// 	cmd := exec.Command("./httpr", "-port", pport, "-control-port", cport, modeFlag, filename, "-debug-headers")
-// 	if err := cmd.Start(); err != nil {
-// 		return nil, nil, "", err
-// 	}
-// 	// Wait for the server to come up.
-// 	serverUp := false
-// 	for i := 0; i < 10; i++ {
-// 		if conn, err := net.Dial("tcp", "localhost:"+cport); err == nil {
-// 			conn.Close()
-// 			serverUp = true
-// 			break
-// 		}
-// 		time.Sleep(time.Second)
-// 	}
-// 	if !serverUp {
-// 		return nil, nil, "", errors.New("server never came up")
-// 	}
-// 	tr, err := proxyTransport(pport, cport)
-// 	if err != nil {
-// 		return nil, nil, "", err
-// 	}
-// 	return cmd, tr, cport, nil
-// }
-
-// func stop(t *testing.T, cmd *exec.Cmd) {
-// 	if err := cmd.Process.Signal(os.Interrupt); err != nil {
-// 		t.Fatal(err)
-// 	}
-// }
-
-// // pickPort picks an unused port.
-// func pickPort() (string, error) {
-// 	l, err := net.Listen("tcp", ":0")
-// 	if err != nil {
-// 		return "", err
-// 	}
-// 	addr := l.Addr().String()
-// 	_, port, err := net.SplitHostPort(addr)
-// 	if err != nil {
-// 		return "", err
-// 	}
-// 	l.Close()
-// 	return port, nil
-// }
-
-// func proxyTransport(pport, cport string) (*http.Transport, error) {
-// 	caCert, err := getBody(fmt.Sprintf("http://localhost:%s/authority.cer", cport))
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	caCertPool := x509.NewCertPool()
-// 	if !caCertPool.AppendCertsFromPEM([]byte(caCert)) {
-// 		return nil, errors.New("bad CA Cert")
-// 	}
-// 	return &http.Transport{
-// 		Proxy:           http.ProxyURL(&url.URL{Host: "localhost:" + pport}),
-// 		TLSClientConfig: &tls.Config{RootCAs: caCertPool},
-// 	}, nil
-// }
-
-// func getBucketInfo(ctx context.Context, hc *http.Client) (string, error) {
-// 	client, err := storage.NewClient(ctx, option.WithHTTPClient(hc))
-// 	if err != nil {
-// 		return "", err
-// 	}
-// 	defer client.Close()
-// 	b := client.Bucket(testutil.ProjID())
-// 	attrs, err := b.Attrs(ctx)
-// 	if err != nil {
-// 		return "", err
-// 	}
-// 	return fmt.Sprintf("name:%s reqpays:%v location:%s sclass:%s",
-// 		attrs.Name, attrs.RequesterPays, attrs.Location, attrs.StorageClass), nil
-// }
-
-// func getBody(url string) ([]byte, error) {
-// 	res, err := http.Get(url)
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	if res.StatusCode != 200 {
-// 		return nil, fmt.Errorf("response: %s", res.Status)
-// 	}
-// 	defer res.Body.Close()
-// 	return ioutil.ReadAll(res.Body)
-// }
+import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/url"
+	"os"
+	"os/exec"
+	"strings"
+	"testing"
+	"time"
+
+	"cloud.google.com/go/internal/testutil"
+	"cloud.google.com/go/storage"
+	"golang.org/x/oauth2"
+	"google.golang.org/api/option"
+)
+
+const initial = "initial state"
+
+func TestIntegration_HTTPR(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Integration tests skipped in short mode")
+	}
+	if testutil.ProjID() == "" {
+		t.Fatal("set GCLOUD_TESTS_GOLANG_PROJECT_ID and GCLOUD_TESTS_GOLANG_KEY")
+	}
+	// Get a unique temporary filename.
+	f, err := ioutil.TempFile("", "httpreplay")
+	if err != nil {
+		t.Fatal(err)
+	}
+	replayFilename := f.Name()
+	if err := f.Close(); err != nil {
+		t.Fatal(err)
+	}
+	defer os.Remove(replayFilename)
+
+	if err := exec.Command("go", "build").Run(); err != nil {
+		t.Fatalf("running 'go build': %v", err)
+	}
+	defer os.Remove("./httpr")
+	want := runRecord(t, replayFilename)
+	got := runReplay(t, replayFilename)
+	if got != want {
+		t.Fatalf("got %q, want %q", got, want)
+	}
+}
+
+func runRecord(t *testing.T, filename string) string {
+	cmd, tr, cport, err := start("-record", filename)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer stop(t, cmd)
+
+	ctx := context.Background()
+	hc := &http.Client{
+		Transport: &oauth2.Transport{
+			Base:   tr,
+			Source: testutil.TokenSource(ctx, storage.ScopeFullControl),
+		},
+	}
+	res, err := http.Post(
+		fmt.Sprintf("http://localhost:%s/initial", cport),
+		"text/plain",
+		strings.NewReader(initial))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if res.StatusCode != 200 {
+		t.Fatalf("from POST: %s", res.Status)
+	}
+	info, err := getBucketInfo(ctx, hc)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return info
+}
+
+func runReplay(t *testing.T, filename string) string {
+	cmd, tr, cport, err := start("-replay", filename)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer stop(t, cmd)
+
+	hc := &http.Client{Transport: tr}
+	res, err := http.Get(fmt.Sprintf("http://localhost:%s/initial", cport))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if res.StatusCode != 200 {
+		t.Fatalf("from GET: %s", res.Status)
+	}
+	bytes, err := ioutil.ReadAll(res.Body)
+	res.Body.Close()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got, want := string(bytes), initial; got != want {
+		t.Errorf("initial: got %q, want %q", got, want)
+	}
+	info, err := getBucketInfo(context.Background(), hc)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return info
+}
+
+// Start the proxy binary and wait for it to come up.
+// Return a transport that talks to the proxy, as well as the control port.
+// modeFlag must be either "-record" or "-replay".
+func start(modeFlag, filename string) (*exec.Cmd, *http.Transport, string, error) {
+	pport, err := pickPort()
+	if err != nil {
+		return nil, nil, "", err
+	}
+	cport, err := pickPort()
+	if err != nil {
+		return nil, nil, "", err
+	}
+	cmd := exec.Command("./httpr", "-port", pport, "-control-port", cport, modeFlag, filename, "-debug-headers")
+	if err := cmd.Start(); err != nil {
+		return nil, nil, "", err
+	}
+	// Wait for the server to come up.
+	serverUp := false
+	for i := 0; i < 10; i++ {
+		if conn, err := net.Dial("tcp", "localhost:"+cport); err == nil {
+			conn.Close()
+			serverUp = true
+			break
+		}
+		time.Sleep(time.Second)
+	}
+	if !serverUp {
+		return nil, nil, "", errors.New("server never came up")
+	}
+	tr, err := proxyTransport(pport, cport)
+	if err != nil {
+		return nil, nil, "", err
+	}
+	return cmd, tr, cport, nil
+}
+
+func stop(t *testing.T, cmd *exec.Cmd) {
+	if err := cmd.Process.Signal(os.Interrupt); err != nil {
+		t.Fatal(err)
+	}
+}
+
+// pickPort picks an unused port.
+func pickPort() (string, error) {
+	l, err := net.Listen("tcp", ":0")
+	if err != nil {
+		return "", err
+	}
+	addr := l.Addr().String()
+	_, port, err := net.SplitHostPort(addr)
+	if err != nil {
+		return "", err
+	}
+	l.Close()
+	return port, nil
+}
+
+func proxyTransport(pport, cport string) (*http.Transport, error) {
+	caCert, err := getBody(fmt.Sprintf("http://localhost:%s/authority.cer", cport))
+	if err != nil {
+		return nil, err
+	}
+	caCertPool := x509.NewCertPool()
+	if !caCertPool.AppendCertsFromPEM([]byte(caCert)) {
+		return nil, errors.New("bad CA Cert")
+	}
+	return &http.Transport{
+		Proxy:           http.ProxyURL(&url.URL{Host: "localhost:" + pport}),
+		TLSClientConfig: &tls.Config{RootCAs: caCertPool},
+	}, nil
+}
+
+func getBucketInfo(ctx context.Context, hc *http.Client) (string, error) {
+	client, err := storage.NewClient(ctx, option.WithHTTPClient(hc))
+	if err != nil {
+		return "", err
+	}
+	defer client.Close()
+	b := client.Bucket(testutil.ProjID())
+	attrs, err := b.Attrs(ctx)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("name:%s reqpays:%v location:%s sclass:%s",
+		attrs.Name, attrs.RequesterPays, attrs.Location, attrs.StorageClass), nil
+}
+
+func getBody(url string) ([]byte, error) {
+	res, err := http.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	if res.StatusCode != 200 {
+		return nil, fmt.Errorf("response: %s", res.Status)
+	}
+	defer res.Body.Close()
+	return ioutil.ReadAll(res.Body)
+}
diff --git a/httpreplay/httpreplay_test.go b/httpreplay/httpreplay_test.go
index 43e8c3f0f1d..3b3252b7e78 100644
--- a/httpreplay/httpreplay_test.go
+++ b/httpreplay/httpreplay_test.go
@@ -14,411 +14,411 @@
 
 package httpreplay_test
 
-// import (
-// 	"bytes"
-// 	"context"
-// 	"encoding/json"
-// 	"fmt"
-// 	"io"
-// 	"io/ioutil"
-// 	"log"
-// 	"net/http"
-// 	"net/http/httptest"
-// 	"os"
-// 	"path/filepath"
-// 	"testing"
-// 	"time"
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
 
-// 	"cloud.google.com/go/httpreplay"
-// 	"cloud.google.com/go/internal/testutil"
-// 	"cloud.google.com/go/storage"
-// 	"google.golang.org/api/option"
-// )
+	"cloud.google.com/go/httpreplay"
+	"cloud.google.com/go/internal/testutil"
+	"cloud.google.com/go/storage"
+	"google.golang.org/api/option"
+)
 
-// const (
-// 	compressedFile   = "httpreplay_compressed.txt"
-// 	uncompressedFile = "httpreplay_uncompressed.txt"
-// )
+const (
+	compressedFile   = "httpreplay_compressed.txt"
+	uncompressedFile = "httpreplay_uncompressed.txt"
+)
 
-// func TestIntegration_RecordAndReplay(t *testing.T) {
-// 	httpreplay.DebugHeaders()
-// 	if testing.Short() {
-// 		t.Skip("Integration tests skipped in short mode")
-// 	}
-// 	replayFilename := tempFilename(t, "RecordAndReplay*.replay")
-// 	defer os.Remove(replayFilename)
-// 	projectID := testutil.ProjID()
-// 	if projectID == "" {
-// 		t.Skip("Need project ID. See CONTRIBUTING.md for details.")
-// 	}
-// 	ctx := context.Background()
-// 	cleanup, err := setup(ctx)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	defer cleanup()
+func TestIntegration_RecordAndReplay(t *testing.T) {
+	httpreplay.DebugHeaders()
+	if testing.Short() {
+		t.Skip("Integration tests skipped in short mode")
+	}
+	replayFilename := tempFilename(t, "RecordAndReplay*.replay")
+	defer os.Remove(replayFilename)
+	projectID := testutil.ProjID()
+	if projectID == "" {
+		t.Skip("Need project ID. See CONTRIBUTING.md for details.")
+	}
+	ctx := context.Background()
+	cleanup, err := setup(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer cleanup()
 
-// 	// Record.
-// 	initial := time.Now()
-// 	ibytes, err := json.Marshal(initial)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	rec, err := httpreplay.NewRecorder(replayFilename, ibytes)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	hc, err := rec.Client(ctx, option.WithTokenSource(
-// 		testutil.TokenSource(ctx, storage.ScopeFullControl)))
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	wanta, wantc := run(t, hc)
-// 	testReadCRC(t, hc, "recording")
-// 	if err := rec.Close(); err != nil {
-// 		t.Fatalf("rec.Close: %v", err)
-// 	}
+	// Record.
+	initial := time.Now()
+	ibytes, err := json.Marshal(initial)
+	if err != nil {
+		t.Fatal(err)
+	}
+	rec, err := httpreplay.NewRecorder(replayFilename, ibytes)
+	if err != nil {
+		t.Fatal(err)
+	}
+	hc, err := rec.Client(ctx, option.WithTokenSource(
+		testutil.TokenSource(ctx, storage.ScopeFullControl)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	wanta, wantc := run(t, hc)
+	testReadCRC(t, hc, "recording")
+	if err := rec.Close(); err != nil {
+		t.Fatalf("rec.Close: %v", err)
+	}
 
-// 	// Replay.
-// 	rep, err := httpreplay.NewReplayer(replayFilename)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	defer rep.Close()
-// 	hc, err = rep.Client(ctx)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	gota, gotc := run(t, hc)
-// 	testReadCRC(t, hc, "replaying")
+	// Replay.
+	rep, err := httpreplay.NewReplayer(replayFilename)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rep.Close()
+	hc, err = rep.Client(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	gota, gotc := run(t, hc)
+	testReadCRC(t, hc, "replaying")
 
-// 	if diff := testutil.Diff(gota, wanta); diff != "" {
-// 		t.Error(diff)
-// 	}
-// 	if !bytes.Equal(gotc, wantc) {
-// 		t.Errorf("got %q, want %q", gotc, wantc)
-// 	}
-// 	var gotInitial time.Time
-// 	if err := json.Unmarshal(rep.Initial(), &gotInitial); err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	if !gotInitial.Equal(initial) {
-// 		t.Errorf("initial: got %v, want %v", gotInitial, initial)
-// 	}
-// }
+	if diff := testutil.Diff(gota, wanta); diff != "" {
+		t.Error(diff)
+	}
+	if !bytes.Equal(gotc, wantc) {
+		t.Errorf("got %q, want %q", gotc, wantc)
+	}
+	var gotInitial time.Time
+	if err := json.Unmarshal(rep.Initial(), &gotInitial); err != nil {
+		t.Fatal(err)
+	}
+	if !gotInitial.Equal(initial) {
+		t.Errorf("initial: got %v, want %v", gotInitial, initial)
+	}
+}
 
-// func setup(ctx context.Context) (cleanup func(), err error) {
-// 	ts := testutil.TokenSource(ctx, storage.ScopeFullControl)
-// 	client, err := storage.NewClient(ctx, option.WithTokenSource(ts))
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	bucket := testutil.ProjID()
+func setup(ctx context.Context) (cleanup func(), err error) {
+	ts := testutil.TokenSource(ctx, storage.ScopeFullControl)
+	client, err := storage.NewClient(ctx, option.WithTokenSource(ts))
+	if err != nil {
+		return nil, err
+	}
+	bucket := testutil.ProjID()
 
-// 	// upload compressed object
-// 	f1, err := os.Open(filepath.Join("internal", "testdata", "compressed.txt"))
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	defer f1.Close()
-// 	w := client.Bucket(bucket).Object(compressedFile).NewWriter(ctx)
-// 	w.ContentEncoding = "gzip"
-// 	w.ContentType = "text/plain"
-// 	if _, err = io.Copy(w, f1); err != nil {
-// 		return nil, err
-// 	}
-// 	if err := w.Close(); err != nil {
-// 		return nil, err
-// 	}
-// 	// upload uncompressed object
-// 	f2, err := os.Open(filepath.Join("internal", "testdata", "uncompressed.txt"))
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	defer f2.Close()
-// 	w = client.Bucket(testutil.ProjID()).Object(uncompressedFile).NewWriter(ctx)
-// 	if _, err = io.Copy(w, f2); err != nil {
-// 		return nil, err
-// 	}
-// 	if err := w.Close(); err != nil {
-// 		return nil, err
-// 	}
-// 	return func() {
-// 		client.Bucket(bucket).Object(compressedFile).Delete(ctx)
-// 		client.Bucket(bucket).Object(uncompressedFile).Delete(ctx)
-// 		client.Close()
-// 	}, nil
-// }
+	// upload compressed object
+	f1, err := os.Open(filepath.Join("internal", "testdata", "compressed.txt"))
+	if err != nil {
+		return nil, err
+	}
+	defer f1.Close()
+	w := client.Bucket(bucket).Object(compressedFile).NewWriter(ctx)
+	w.ContentEncoding = "gzip"
+	w.ContentType = "text/plain"
+	if _, err = io.Copy(w, f1); err != nil {
+		return nil, err
+	}
+	if err := w.Close(); err != nil {
+		return nil, err
+	}
+	// upload uncompressed object
+	f2, err := os.Open(filepath.Join("internal", "testdata", "uncompressed.txt"))
+	if err != nil {
+		return nil, err
+	}
+	defer f2.Close()
+	w = client.Bucket(testutil.ProjID()).Object(uncompressedFile).NewWriter(ctx)
+	if _, err = io.Copy(w, f2); err != nil {
+		return nil, err
+	}
+	if err := w.Close(); err != nil {
+		return nil, err
+	}
+	return func() {
+		client.Bucket(bucket).Object(compressedFile).Delete(ctx)
+		client.Bucket(bucket).Object(uncompressedFile).Delete(ctx)
+		client.Close()
+	}, nil
+}
 
-// // TODO(jba): test errors
+// TODO(jba): test errors
 
-// func run(t *testing.T, hc *http.Client) (*storage.BucketAttrs, []byte) {
-// 	ctx := context.Background()
-// 	client, err := storage.NewClient(ctx, option.WithHTTPClient(hc))
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	defer client.Close()
-// 	b := client.Bucket(testutil.ProjID())
-// 	attrs, err := b.Attrs(ctx)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	obj := b.Object("replay-test")
-// 	w := obj.NewWriter(ctx)
-// 	data := []byte{150, 151, 152}
-// 	if _, err := w.Write(data); err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	if err := w.Close(); err != nil {
-// 		t.Fatal(err)
-// 	}
+func run(t *testing.T, hc *http.Client) (*storage.BucketAttrs, []byte) {
+	ctx := context.Background()
+	client, err := storage.NewClient(ctx, option.WithHTTPClient(hc))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer client.Close()
+	b := client.Bucket(testutil.ProjID())
+	attrs, err := b.Attrs(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	obj := b.Object("replay-test")
+	w := obj.NewWriter(ctx)
+	data := []byte{150, 151, 152}
+	if _, err := w.Write(data); err != nil {
+		t.Fatal(err)
+	}
+	if err := w.Close(); err != nil {
+		t.Fatal(err)
+	}
 
-// 	r, err := obj.NewReader(ctx)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	defer r.Close()
-// 	contents, err := ioutil.ReadAll(r)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
+	r, err := obj.NewReader(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer r.Close()
+	contents, err := ioutil.ReadAll(r)
+	if err != nil {
+		t.Fatal(err)
+	}
 
-// 	return attrs, contents
-// }
+	return attrs, contents
+}
 
-// func testReadCRC(t *testing.T, hc *http.Client, mode string) {
-// 	ctx := context.Background()
-// 	client, err := storage.NewClient(ctx, option.WithHTTPClient(hc))
-// 	if err != nil {
-// 		t.Fatalf("%s: %v", mode, err)
-// 	}
-// 	defer client.Close()
+func testReadCRC(t *testing.T, hc *http.Client, mode string) {
+	ctx := context.Background()
+	client, err := storage.NewClient(ctx, option.WithHTTPClient(hc))
+	if err != nil {
+		t.Fatalf("%s: %v", mode, err)
+	}
+	defer client.Close()
 
-// 	bucket := testutil.ProjID()
-// 	uncompressedObj := client.Bucket(bucket).Object(uncompressedFile)
-// 	gzippedObj := client.Bucket(bucket).Object(compressedFile)
+	bucket := testutil.ProjID()
+	uncompressedObj := client.Bucket(bucket).Object(uncompressedFile)
+	gzippedObj := client.Bucket(bucket).Object(compressedFile)
 
-// 	for _, test := range []struct {
-// 		desc           string
-// 		obj            *storage.ObjectHandle
-// 		offset, length int64
-// 		readCompressed bool // don't decompress a gzipped file
+	for _, test := range []struct {
+		desc           string
+		obj            *storage.ObjectHandle
+		offset, length int64
+		readCompressed bool // don't decompress a gzipped file
 
-// 		wantErr bool
-// 		wantLen int // length of contents
-// 	}{
-// 		{
-// 			desc:           "uncompressed, entire file",
-// 			obj:            uncompressedObj,
-// 			offset:         0,
-// 			length:         -1,
-// 			readCompressed: false,
-// 			wantLen:        179,
-// 		},
-// 		{
-// 			desc:           "uncompressed, entire file, don't decompress",
-// 			obj:            uncompressedObj,
-// 			offset:         0,
-// 			length:         -1,
-// 			readCompressed: true,
-// 			wantLen:        179,
-// 		},
-// 		{
-// 			desc:           "uncompressed, suffix",
-// 			obj:            uncompressedObj,
-// 			offset:         9,
-// 			length:         -1,
-// 			readCompressed: false,
-// 			wantLen:        170,
-// 		},
-// 		{
-// 			desc:           "uncompressed, prefix",
-// 			obj:            uncompressedObj,
-// 			offset:         0,
-// 			length:         18,
-// 			readCompressed: false,
-// 			wantLen:        18,
-// 		},
-// 		{
-// 			// When a gzipped file is unzipped by GCS, we can't verify the checksum
-// 			// because it was computed against the zipped contents. There is no
-// 			// header that indicates that a gzipped file is being served unzipped.
-// 			// But our CRC check only happens if there is a Content-Length header,
-// 			// and that header is absent for this read.
-// 			desc:           "compressed, entire file, server unzips",
-// 			obj:            gzippedObj,
-// 			offset:         0,
-// 			length:         -1,
-// 			readCompressed: false,
-// 			wantLen:        179,
-// 		},
-// 		{
-// 			// When we read a gzipped file uncompressed, it's like reading a regular file:
-// 			// the served content and the CRC match.
-// 			desc:           "compressed, entire file, read compressed",
-// 			obj:            gzippedObj,
-// 			offset:         0,
-// 			length:         -1,
-// 			readCompressed: true,
-// 			wantLen:        128,
-// 		},
-// 		{
-// 			desc:           "compressed, partial, read compressed",
-// 			obj:            gzippedObj,
-// 			offset:         1,
-// 			length:         8,
-// 			readCompressed: true,
-// 			wantLen:        8,
-// 		},
-// 		{
-// 			desc:    "uncompressed, HEAD",
-// 			obj:     uncompressedObj,
-// 			offset:  0,
-// 			length:  0,
-// 			wantLen: 0,
-// 		},
-// 		{
-// 			desc:    "compressed, HEAD",
-// 			obj:     gzippedObj,
-// 			offset:  0,
-// 			length:  0,
-// 			wantLen: 0,
-// 		},
-// 	} {
-// 		obj := test.obj.ReadCompressed(test.readCompressed)
-// 		r, err := obj.NewRangeReader(ctx, test.offset, test.length)
-// 		if err != nil {
-// 			if test.wantErr {
-// 				continue
-// 			}
-// 			t.Errorf("%s: %s: %v", mode, test.desc, err)
-// 			continue
-// 		}
-// 		data, err := ioutil.ReadAll(r)
-// 		_ = r.Close()
-// 		if err != nil {
-// 			t.Errorf("%s: %s: %v", mode, test.desc, err)
-// 			continue
-// 		}
-// 		if got, want := len(data), test.wantLen; got != want {
-// 			t.Errorf("%s: %s: len: got %d, want %d", mode, test.desc, got, want)
-// 		}
-// 	}
-// }
+		wantErr bool
+		wantLen int // length of contents
+	}{
+		{
+			desc:           "uncompressed, entire file",
+			obj:            uncompressedObj,
+			offset:         0,
+			length:         -1,
+			readCompressed: false,
+			wantLen:        179,
+		},
+		{
+			desc:           "uncompressed, entire file, don't decompress",
+			obj:            uncompressedObj,
+			offset:         0,
+			length:         -1,
+			readCompressed: true,
+			wantLen:        179,
+		},
+		{
+			desc:           "uncompressed, suffix",
+			obj:            uncompressedObj,
+			offset:         9,
+			length:         -1,
+			readCompressed: false,
+			wantLen:        170,
+		},
+		{
+			desc:           "uncompressed, prefix",
+			obj:            uncompressedObj,
+			offset:         0,
+			length:         18,
+			readCompressed: false,
+			wantLen:        18,
+		},
+		{
+			// When a gzipped file is unzipped by GCS, we can't verify the checksum
+			// because it was computed against the zipped contents. There is no
+			// header that indicates that a gzipped file is being served unzipped.
+			// But our CRC check only happens if there is a Content-Length header,
+			// and that header is absent for this read.
+			desc:           "compressed, entire file, server unzips",
+			obj:            gzippedObj,
+			offset:         0,
+			length:         -1,
+			readCompressed: false,
+			wantLen:        179,
+		},
+		{
+			// When we read a gzipped file uncompressed, it's like reading a regular file:
+			// the served content and the CRC match.
+			desc:           "compressed, entire file, read compressed",
+			obj:            gzippedObj,
+			offset:         0,
+			length:         -1,
+			readCompressed: true,
+			wantLen:        128,
+		},
+		{
+			desc:           "compressed, partial, read compressed",
+			obj:            gzippedObj,
+			offset:         1,
+			length:         8,
+			readCompressed: true,
+			wantLen:        8,
+		},
+		{
+			desc:    "uncompressed, HEAD",
+			obj:     uncompressedObj,
+			offset:  0,
+			length:  0,
+			wantLen: 0,
+		},
+		{
+			desc:    "compressed, HEAD",
+			obj:     gzippedObj,
+			offset:  0,
+			length:  0,
+			wantLen: 0,
+		},
+	} {
+		obj := test.obj.ReadCompressed(test.readCompressed)
+		r, err := obj.NewRangeReader(ctx, test.offset, test.length)
+		if err != nil {
+			if test.wantErr {
+				continue
+			}
+			t.Errorf("%s: %s: %v", mode, test.desc, err)
+			continue
+		}
+		data, err := ioutil.ReadAll(r)
+		_ = r.Close()
+		if err != nil {
+			t.Errorf("%s: %s: %v", mode, test.desc, err)
+			continue
+		}
+		if got, want := len(data), test.wantLen; got != want {
+			t.Errorf("%s: %s: len: got %d, want %d", mode, test.desc, got, want)
+		}
+	}
+}
 
-// func TestRemoveAndClear(t *testing.T) {
-// 	// Disable logging for this test, since it generates a lot.
-// 	log.SetOutput(ioutil.Discard)
-// 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-// 		fmt.Fprintln(w, "LGTM")
-// 	}))
-// 	defer srv.Close()
+func TestRemoveAndClear(t *testing.T) {
+	// Disable logging for this test, since it generates a lot.
+	log.SetOutput(ioutil.Discard)
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		fmt.Fprintln(w, "LGTM")
+	}))
+	defer srv.Close()
 
-// 	replayFilename := tempFilename(t, "TestRemoveAndClear*.replay")
-// 	defer os.Remove(replayFilename)
+	replayFilename := tempFilename(t, "TestRemoveAndClear*.replay")
+	defer os.Remove(replayFilename)
 
-// 	ctx := context.Background()
-// 	// Record
-// 	rec, err := httpreplay.NewRecorder(replayFilename, nil)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	rec.ClearHeaders("Clear")
-// 	rec.RemoveRequestHeaders("Rem*")
-// 	rec.ClearQueryParams("c")
-// 	rec.RemoveQueryParams("r")
-// 	hc, err := rec.Client(ctx, option.WithoutAuthentication())
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	query := "k=1&r=2&c=3"
-// 	req, err := http.NewRequest("GET", srv.URL+"?"+query, nil)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	headers := map[string]string{"Keep": "ok", "Clear": "secret", "Remove": "bye"}
-// 	for k, v := range headers {
-// 		req.Header.Set(k, v)
-// 	}
-// 	if _, err := hc.Do(req); err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	if err := rec.Close(); err != nil {
-// 		t.Fatal(err)
-// 	}
+	ctx := context.Background()
+	// Record
+	rec, err := httpreplay.NewRecorder(replayFilename, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	rec.ClearHeaders("Clear")
+	rec.RemoveRequestHeaders("Rem*")
+	rec.ClearQueryParams("c")
+	rec.RemoveQueryParams("r")
+	hc, err := rec.Client(ctx, option.WithoutAuthentication())
+	if err != nil {
+		t.Fatal(err)
+	}
+	query := "k=1&r=2&c=3"
+	req, err := http.NewRequest("GET", srv.URL+"?"+query, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	headers := map[string]string{"Keep": "ok", "Clear": "secret", "Remove": "bye"}
+	for k, v := range headers {
+		req.Header.Set(k, v)
+	}
+	if _, err := hc.Do(req); err != nil {
+		t.Fatal(err)
+	}
+	if err := rec.Close(); err != nil {
+		t.Fatal(err)
+	}
 
-// 	// Replay
-// 	// For both headers and query param:
-// 	// - k or Keep must be present and identical
-// 	// - c or Clear must be present, but can be different
-// 	// - r or Remove can be anything
-// 	for _, test := range []struct {
-// 		query       string
-// 		headers     map[string]string
-// 		wantSuccess bool
-// 	}{
-// 		{query, headers, true}, // same query string and headers
-// 		{query,
-// 			map[string]string{"Keep": "oops", "Clear": "secret", "Remove": "bye"},
-// 			false, // different Keep
-// 		},
-// 		{query, map[string]string{}, false},                               // missing Keep and Clear
-// 		{query, map[string]string{"Keep": "ok"}, false},                   // missing Clear
-// 		{query, map[string]string{"Keep": "ok", "Clear": "secret"}, true}, // missing Remove is OK
-// 		{
-// 			query,
-// 			map[string]string{"Keep": "ok", "Clear": "secret", "Remove": "whatev"},
-// 			true,
-// 		}, // different Remove is OK
-// 		{query, map[string]string{"Keep": "ok", "Clear": "diff"}, true}, // different Clear is OK
-// 		{"", headers, false},            // no query string
-// 		{"k=x&r=2&c=3", headers, false}, // different k
-// 		{"r=2", headers, false},         // missing k and c
-// 		{"k=1&r=2", headers, false},     // missing c
-// 		{"k=1&c=3", headers, true},      // missing r is OK
-// 		{"k=1&r=x&c=3", headers, true},  // different r is OK,
-// 		{"k=1&r=2&c=x", headers, true},  // different clear is OK
-// 	} {
-// 		rep, err := httpreplay.NewReplayer(replayFilename)
-// 		if err != nil {
-// 			t.Fatal(err)
-// 		}
-// 		hc, err = rep.Client(ctx)
-// 		if err != nil {
-// 			t.Fatal(err)
-// 		}
-// 		url := srv.URL
-// 		if test.query != "" {
-// 			url += "?" + test.query
-// 		}
-// 		req, err = http.NewRequest("GET", url, nil)
-// 		if err != nil {
-// 			t.Fatal(err)
-// 		}
-// 		for k, v := range test.headers {
-// 			req.Header.Set(k, v)
-// 		}
-// 		resp, err := hc.Do(req)
-// 		if err != nil {
-// 			t.Fatal(err)
-// 		}
-// 		rep.Close()
-// 		if (resp.StatusCode == 200) != test.wantSuccess {
-// 			t.Errorf("%q, %v: got %d, wanted success=%t",
-// 				test.query, test.headers, resp.StatusCode, test.wantSuccess)
-// 		}
-// 	}
-// }
+	// Replay
+	// For both headers and query param:
+	// - k or Keep must be present and identical
+	// - c or Clear must be present, but can be different
+	// - r or Remove can be anything
+	for _, test := range []struct {
+		query       string
+		headers     map[string]string
+		wantSuccess bool
+	}{
+		{query, headers, true}, // same query string and headers
+		{query,
+			map[string]string{"Keep": "oops", "Clear": "secret", "Remove": "bye"},
+			false, // different Keep
+		},
+		{query, map[string]string{}, false},                               // missing Keep and Clear
+		{query, map[string]string{"Keep": "ok"}, false},                   // missing Clear
+		{query, map[string]string{"Keep": "ok", "Clear": "secret"}, true}, // missing Remove is OK
+		{
+			query,
+			map[string]string{"Keep": "ok", "Clear": "secret", "Remove": "whatev"},
+			true,
+		}, // different Remove is OK
+		{query, map[string]string{"Keep": "ok", "Clear": "diff"}, true}, // different Clear is OK
+		{"", headers, false},            // no query string
+		{"k=x&r=2&c=3", headers, false}, // different k
+		{"r=2", headers, false},         // missing k and c
+		{"k=1&r=2", headers, false},     // missing c
+		{"k=1&c=3", headers, true},      // missing r is OK
+		{"k=1&r=x&c=3", headers, true},  // different r is OK,
+		{"k=1&r=2&c=x", headers, true},  // different clear is OK
+	} {
+		rep, err := httpreplay.NewReplayer(replayFilename)
+		if err != nil {
+			t.Fatal(err)
+		}
+		hc, err = rep.Client(ctx)
+		if err != nil {
+			t.Fatal(err)
+		}
+		url := srv.URL
+		if test.query != "" {
+			url += "?" + test.query
+		}
+		req, err = http.NewRequest("GET", url, nil)
+		if err != nil {
+			t.Fatal(err)
+		}
+		for k, v := range test.headers {
+			req.Header.Set(k, v)
+		}
+		resp, err := hc.Do(req)
+		if err != nil {
+			t.Fatal(err)
+		}
+		rep.Close()
+		if (resp.StatusCode == 200) != test.wantSuccess {
+			t.Errorf("%q, %v: got %d, wanted success=%t",
+				test.query, test.headers, resp.StatusCode, test.wantSuccess)
+		}
+	}
+}
 
-// func tempFilename(t *testing.T, pattern string) string {
-// 	f, err := ioutil.TempFile("", pattern)
-// 	if err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	filename := f.Name()
-// 	if err := f.Close(); err != nil {
-// 		t.Fatal(err)
-// 	}
-// 	return filename
-// }
+func tempFilename(t *testing.T, pattern string) string {
+	f, err := ioutil.TempFile("", pattern)
+	if err != nil {
+		t.Fatal(err)
+	}
+	filename := f.Name()
+	if err := f.Close(); err != nil {
+		t.Fatal(err)
+	}
+	return filename
+}
diff --git a/internal/generated/snippets/go.mod b/internal/generated/snippets/go.mod
index 466559d83cd..b0178987dfc 100644
--- a/internal/generated/snippets/go.mod
+++ b/internal/generated/snippets/go.mod
@@ -51,7 +51,7 @@ require (
 	cloud.google.com/go/gkeconnect v0.1.0
 	cloud.google.com/go/gkehub v0.2.0
 	cloud.google.com/go/gsuiteaddons v1.0.0
-	cloud.google.com/go/iam v0.1.1
+	cloud.google.com/go/iam v0.2.0
 	cloud.google.com/go/iap v1.0.0
 	cloud.google.com/go/ids v0.1.0
 	cloud.google.com/go/iot v1.0.0
diff --git a/internal/godocfx/go.mod b/internal/godocfx/go.mod
index 9c4f04b64b3..ba1df324ad2 100644
--- a/internal/godocfx/go.mod
+++ b/internal/godocfx/go.mod
@@ -6,7 +6,6 @@ require (
 	cloud.google.com/go v0.100.2
 	cloud.google.com/go/bigquery v1.26.0
 	cloud.google.com/go/datastore v1.6.0
-	cloud.google.com/go/iam v0.1.0 // indirect
 	cloud.google.com/go/storage v1.18.2
 	github.com/google/go-cmp v0.5.7
 	github.com/yuin/goldmark v1.4.4
diff --git a/internal/godocfx/go.sum b/internal/godocfx/go.sum
index 88ba6d4cb2a..33dbf8b6ec3 100644
--- a/internal/godocfx/go.sum
+++ b/internal/godocfx/go.sum
@@ -1,3 +1,8 @@
+cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
+cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
+cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
+cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
+cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
 cloud.google.com/go/bigquery v1.26.0 h1:/q4uEmgogEwNOgB9VnJT/vAugY1jahD/BrZSMYl1XUM=
 cloud.google.com/go/bigquery v1.26.0/go.mod h1:zB9gvHgECb8KMHiAIVI8uwvlWVF4QDzVnUQP/CdPaQc=
 cloud.google.com/go/compute v0.1.0/go.mod h1:GAesmwr110a34z04OlxYkATPBEfVhkymfTBXtfbBFow=
@@ -5,13 +10,24 @@ cloud.google.com/go/compute v1.2.0 h1:EKki8sSdvDU0OO9mAXGwPXOTOgPz2l08R0/IutDH11
 cloud.google.com/go/compute v1.2.0/go.mod h1:xlogom/6gr8RJGBe7nT2eGsQYAFUbbv8dbC29qE3Xmw=
 cloud.google.com/go/datacatalog v1.0.0 h1:KHjIs525XbESSGHxwEKHTzkwfvj7xxYrCy4gcvvlHBY=
 cloud.google.com/go/datacatalog v1.0.0/go.mod h1:cz8rXsZV278v0nXPhnp5eXRnZtqx2Mtv96W8r7a7Oxs=
+cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
 cloud.google.com/go/datastore v1.6.0 h1:wZaHIqu1tebvGRYhVgcfNX6jN2q638OGO23JyJckxuI=
 cloud.google.com/go/datastore v1.6.0/go.mod h1:q3ZJj1GMQRdU0OCv5XXpCqfLqHHZnI5zcumkvuYDmHI=
-cloud.google.com/go/iam v0.1.0 h1:W2vbGCrE3Z7J/x3WXLxxGl9LMSB2uhsAA7Ss/6u/qRY=
-cloud.google.com/go/iam v0.1.0/go.mod h1:vcUNEa0pEm0qRVpmWepWaFMIAI8/hjB9mO8rNCJtF6c=
+cloud.google.com/go/iam v0.2.0 h1:Ouq6qif4mZdXkb3SiFMpxvu0JQJB1Yid9TsZ23N6hg8=
+cloud.google.com/go/iam v0.2.0/go.mod h1:BCK88+tmjAwnZYfOSizmKCTSFjJHCa18t3DpdGEY13Y=
+cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
+cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
+cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
+cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
+cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
+cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 cloud.google.com/go/storage v1.18.2 h1:5NQw6tOn3eMm0oE8vTkfjau18kjL79FlMjy/CHTpmoY=
 cloud.google.com/go/storage v1.18.2/go.mod h1:AiIj7BWXyhO5gGVmYJ+S8tbkCx3yb0IMjua8Aw4naVM=
+dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -35,7 +51,12 @@ github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.m
 github.com/envoyproxy/go-control-plane v0.9.10-0.20210907150352-cf90f659a021/go.mod h1:AFq3mo9L8Lqqiid3OhADV3RfLJnjiw63cSpi+fDTRC0=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e h1:1r7pUrabqp18hOBcwBwiTsbnFeTZHV9eER/QT5JVZxY=
 github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
@@ -43,6 +64,7 @@ github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5y
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
+github.com/golang/protobuf v1.3.4/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
 github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
@@ -60,6 +82,7 @@ github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5a
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
@@ -68,36 +91,73 @@ github.com/google/go-cmp v0.5.7 h1:81/ik6ipDQS2aGcBfIN5dHDB36BwrStyeAQquSYCV4o=
 github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
 github.com/google/martian/v3 v3.2.1 h1:d8MncMlErDFTwQGBK1xhv026j9kqhvw1Qv9IbWT1VLQ=
 github.com/google/martian/v3 v3.2.1/go.mod h1:oBOf6HBosgwRXnUGWUB05QECsc6uvmMiJ3+6W4l/CUk=
+github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/googleapis/gax-go/v2 v2.1.0/go.mod h1:Q3nei7sK6ybPYH7twZdmQpAd1MKb7pfu6SK+H1/DsU0=
 github.com/googleapis/gax-go/v2 v2.1.1 h1:dp3bWCh+PPO1zjRRiCSczJav13sBvG4UhNyVTa1KqdU=
 github.com/googleapis/gax-go/v2 v2.1.1/go.mod h1:hddJymUZASv3XPyGkUpKj8pPO47Rmb0eJc8R6ouapiM=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
+github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
+github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
+github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
+github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
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@@ -107,9 +167,19 @@ golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73r
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@@ -118,6 +188,8 @@ golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qx
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@@ -127,13 +199,30 @@ golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8/go.mod h1:KelEdhl1UZF7XfJ
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@@ -148,6 +237,7 @@ golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20211210111614-af8b64212486/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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@@ -159,13 +249,33 @@ golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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@@ -174,23 +284,55 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
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@@ -202,14 +344,22 @@ google.golang.org/genproto v0.0.0-20211016002631-37fc39342514/go.mod h1:5CzLGKJ6
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@@ -229,17 +379,23 @@ google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzi
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