feat(notebooks): generate apiv1beta1 (#2617)

diff --git a/internal/.repo-metadata-full.json b/internal/.repo-metadata-full.json
index 6f95acd..baef050 100644
--- a/internal/.repo-metadata-full.json
+++ b/internal/.repo-metadata-full.json
@@ -423,6 +423,14 @@
     "docs_url": "https://pkg.go.dev/cloud.google.com/go/monitoring/dashboard/apiv1",
     "release_level": "beta"
   },
+  "cloud.google.com/go/notebooks/apiv1beta1": {
+    "distribution_name": "cloud.google.com/go/notebooks/apiv1beta1",
+    "description": "Notebooks API",
+    "language": "Go",
+    "client_library_type": "generated",
+    "docs_url": "https://pkg.go.dev/cloud.google.com/go/notebooks/apiv1beta1",
+    "release_level": "beta"
+  },
   "cloud.google.com/go/osconfig/agentendpoint/apiv1": {
     "distribution_name": "cloud.google.com/go/osconfig/agentendpoint/apiv1",
     "description": "Cloud OS Config API",
diff --git a/internal/gapicgen/generator/config.go b/internal/gapicgen/generator/config.go
index e18c984..1126c2c 100644
--- a/internal/gapicgen/generator/config.go
+++ b/internal/gapicgen/generator/config.go
@@ -736,6 +736,14 @@
 		releaseLevel:          "beta",
 	},
 	{
+		inputDirectoryPath:    "google/cloud/notebooks/v1beta1",
+		pkg:                   "notebooks",
+		importPath:            "cloud.google.com/go/notebooks/apiv1beta1",
+		gRPCServiceConfigPath: "google/cloud/notebooks/v1beta1/notebooks_grpc_service_config.json",
+		apiServiceConfigPath:  "google/cloud/notebooks/v1beta1/notebooks_v1beta1.yaml",
+		releaseLevel:          "beta",
+	},
+	{
 		inputDirectoryPath:    "google/cloud/billing/budgets/v1beta1",
 		pkg:                   "budgets",
 		importPath:            "cloud.google.com/go/billing/budgets/apiv1beta1",
diff --git a/notebooks/apiv1beta1/doc.go b/notebooks/apiv1beta1/doc.go
new file mode 100644
index 0000000..c04f26d
--- /dev/null
+++ b/notebooks/apiv1beta1/doc.go
@@ -0,0 +1,109 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Code generated by protoc-gen-go_gapic. DO NOT EDIT.
+
+// Package notebooks is an auto-generated package for the
+// Notebooks API.
+//
+// AI Platform Notebooks API (beta) is used to manage notebook resources in
+// Google Cloud. AI Platform Notebooks API is in a pre-release state and
+// might change or have limited support. For more information, see the <a
+// href="/products#product-launch-stages">product launch stages</a>.
+//
+//   NOTE: This package is in beta. It is not stable, and may be subject to changes.
+//
+// Use of Context
+//
+// The ctx passed to NewClient is used for authentication requests and
+// for creating the underlying connection, but is not used for subsequent calls.
+// Individual methods on the client use the ctx given to them.
+//
+// To close the open connection, use the Close() method.
+//
+// For information about setting deadlines, reusing contexts, and more
+// please visit godoc.org/cloud.google.com/go.
+package notebooks // import "cloud.google.com/go/notebooks/apiv1beta1"
+
+import (
+	"context"
+	"runtime"
+	"strings"
+	"unicode"
+
+	"google.golang.org/api/option"
+	"google.golang.org/grpc/metadata"
+)
+
+// For more information on implementing a client constructor hook, see
+// https://github.com/googleapis/google-cloud-go/wiki/Customizing-constructors.
+type clientHookParams struct{}
+type clientHook func(context.Context, clientHookParams) ([]option.ClientOption, error)
+
+const versionClient = "20200720"
+
+func insertMetadata(ctx context.Context, mds ...metadata.MD) context.Context {
+	out, _ := metadata.FromOutgoingContext(ctx)
+	out = out.Copy()
+	for _, md := range mds {
+		for k, v := range md {
+			out[k] = append(out[k], v...)
+		}
+	}
+	return metadata.NewOutgoingContext(ctx, out)
+}
+
+// DefaultAuthScopes reports the default set of authentication scopes to use with this package.
+func DefaultAuthScopes() []string {
+	return []string{
+		"https://www.googleapis.com/auth/cloud-platform",
+	}
+}
+
+// versionGo returns the Go runtime version. The returned string
+// has no whitespace, suitable for reporting in header.
+func versionGo() string {
+	const develPrefix = "devel +"
+
+	s := runtime.Version()
+	if strings.HasPrefix(s, develPrefix) {
+		s = s[len(develPrefix):]
+		if p := strings.IndexFunc(s, unicode.IsSpace); p >= 0 {
+			s = s[:p]
+		}
+		return s
+	}
+
+	notSemverRune := func(r rune) bool {
+		return !strings.ContainsRune("0123456789.", r)
+	}
+
+	if strings.HasPrefix(s, "go1") {
+		s = s[2:]
+		var prerelease string
+		if p := strings.IndexFunc(s, notSemverRune); p >= 0 {
+			s, prerelease = s[:p], s[p:]
+		}
+		if strings.HasSuffix(s, ".") {
+			s += "0"
+		} else if strings.Count(s, ".") < 2 {
+			s += ".0"
+		}
+		if prerelease != "" {
+			s += "-" + prerelease
+		}
+		return s
+	}
+	return "UNKNOWN"
+}
diff --git a/notebooks/apiv1beta1/notebook_client.go b/notebooks/apiv1beta1/notebook_client.go
new file mode 100644
index 0000000..a710819
--- /dev/null
+++ b/notebooks/apiv1beta1/notebook_client.go
@@ -0,0 +1,1623 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Code generated by protoc-gen-go_gapic. DO NOT EDIT.
+
+package notebooks
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"net/url"
+	"time"
+
+	"cloud.google.com/go/longrunning"
+	lroauto "cloud.google.com/go/longrunning/autogen"
+	"github.com/golang/protobuf/proto"
+	gax "github.com/googleapis/gax-go/v2"
+	"google.golang.org/api/iterator"
+	"google.golang.org/api/option"
+	gtransport "google.golang.org/api/transport/grpc"
+	notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+	longrunningpb "google.golang.org/genproto/googleapis/longrunning"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/metadata"
+)
+
+var newNotebookClientHook clientHook
+
+// NotebookCallOptions contains the retry settings for each method of NotebookClient.
+type NotebookCallOptions struct {
+	ListInstances           []gax.CallOption
+	GetInstance             []gax.CallOption
+	CreateInstance          []gax.CallOption
+	RegisterInstance        []gax.CallOption
+	SetInstanceAccelerator  []gax.CallOption
+	SetInstanceMachineType  []gax.CallOption
+	SetInstanceLabels       []gax.CallOption
+	DeleteInstance          []gax.CallOption
+	StartInstance           []gax.CallOption
+	StopInstance            []gax.CallOption
+	ResetInstance           []gax.CallOption
+	ReportInstanceInfo      []gax.CallOption
+	IsInstanceUpgradeable   []gax.CallOption
+	UpgradeInstance         []gax.CallOption
+	UpgradeInstanceInternal []gax.CallOption
+	ListEnvironments        []gax.CallOption
+	GetEnvironment          []gax.CallOption
+	CreateEnvironment       []gax.CallOption
+	DeleteEnvironment       []gax.CallOption
+}
+
+func defaultNotebookClientOptions() []option.ClientOption {
+	return []option.ClientOption{
+		option.WithEndpoint("notebooks.googleapis.com:443"),
+		option.WithGRPCDialOption(grpc.WithDisableServiceConfig()),
+		option.WithScopes(DefaultAuthScopes()...),
+		option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
+			grpc.MaxCallRecvMsgSize(math.MaxInt32))),
+	}
+}
+
+func defaultNotebookCallOptions() *NotebookCallOptions {
+	return &NotebookCallOptions{
+		ListInstances:           []gax.CallOption{},
+		GetInstance:             []gax.CallOption{},
+		CreateInstance:          []gax.CallOption{},
+		RegisterInstance:        []gax.CallOption{},
+		SetInstanceAccelerator:  []gax.CallOption{},
+		SetInstanceMachineType:  []gax.CallOption{},
+		SetInstanceLabels:       []gax.CallOption{},
+		DeleteInstance:          []gax.CallOption{},
+		StartInstance:           []gax.CallOption{},
+		StopInstance:            []gax.CallOption{},
+		ResetInstance:           []gax.CallOption{},
+		ReportInstanceInfo:      []gax.CallOption{},
+		IsInstanceUpgradeable:   []gax.CallOption{},
+		UpgradeInstance:         []gax.CallOption{},
+		UpgradeInstanceInternal: []gax.CallOption{},
+		ListEnvironments:        []gax.CallOption{},
+		GetEnvironment:          []gax.CallOption{},
+		CreateEnvironment:       []gax.CallOption{},
+		DeleteEnvironment:       []gax.CallOption{},
+	}
+}
+
+// NotebookClient is a client for interacting with Notebooks API.
+//
+// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
+type NotebookClient struct {
+	// Connection pool of gRPC connections to the service.
+	connPool gtransport.ConnPool
+
+	// The gRPC API client.
+	notebookClient notebookspb.NotebookServiceClient
+
+	// LROClient is used internally to handle longrunning operations.
+	// It is exposed so that its CallOptions can be modified if required.
+	// Users should not Close this client.
+	LROClient *lroauto.OperationsClient
+
+	// The call options for this service.
+	CallOptions *NotebookCallOptions
+
+	// The x-goog-* metadata to be sent with each request.
+	xGoogMetadata metadata.MD
+}
+
+// NewNotebookClient creates a new notebook service client.
+//
+// API service for Cloud AI Platform Notebooks.
+func NewNotebookClient(ctx context.Context, opts ...option.ClientOption) (*NotebookClient, error) {
+	clientOpts := defaultNotebookClientOptions()
+
+	if newNotebookClientHook != nil {
+		hookOpts, err := newNotebookClientHook(ctx, clientHookParams{})
+		if err != nil {
+			return nil, err
+		}
+		clientOpts = append(clientOpts, hookOpts...)
+	}
+
+	connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...)
+	if err != nil {
+		return nil, err
+	}
+	c := &NotebookClient{
+		connPool:    connPool,
+		CallOptions: defaultNotebookCallOptions(),
+
+		notebookClient: notebookspb.NewNotebookServiceClient(connPool),
+	}
+	c.setGoogleClientInfo()
+
+	c.LROClient, err = lroauto.NewOperationsClient(ctx, gtransport.WithConnPool(connPool))
+	if err != nil {
+		// This error "should not happen", since we are just reusing old connection pool
+		// and never actually need to dial.
+		// If this does happen, we could leak connp. However, we cannot close conn:
+		// If the user invoked the constructor with option.WithGRPCConn,
+		// we would close a connection that's still in use.
+		// TODO: investigate error conditions.
+		return nil, err
+	}
+	return c, nil
+}
+
+// Connection returns a connection to the API service.
+//
+// Deprecated.
+func (c *NotebookClient) Connection() *grpc.ClientConn {
+	return c.connPool.Conn()
+}
+
+// Close closes the connection to the API service. The user should invoke this when
+// the client is no longer required.
+func (c *NotebookClient) Close() error {
+	return c.connPool.Close()
+}
+
+// setGoogleClientInfo sets the name and version of the application in
+// the `x-goog-api-client` header passed on each request. Intended for
+// use by Google-written clients.
+func (c *NotebookClient) setGoogleClientInfo(keyval ...string) {
+	kv := append([]string{"gl-go", versionGo()}, keyval...)
+	kv = append(kv, "gapic", versionClient, "gax", gax.Version, "grpc", grpc.Version)
+	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
+}
+
+// ListInstances lists instances in a given project and location.
+func (c *NotebookClient) ListInstances(ctx context.Context, req *notebookspb.ListInstancesRequest, opts ...gax.CallOption) *InstanceIterator {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.ListInstances[0:len(c.CallOptions.ListInstances):len(c.CallOptions.ListInstances)], opts...)
+	it := &InstanceIterator{}
+	req = proto.Clone(req).(*notebookspb.ListInstancesRequest)
+	it.InternalFetch = func(pageSize int, pageToken string) ([]*notebookspb.Instance, string, error) {
+		var resp *notebookspb.ListInstancesResponse
+		req.PageToken = pageToken
+		if pageSize > math.MaxInt32 {
+			req.PageSize = math.MaxInt32
+		} else {
+			req.PageSize = int32(pageSize)
+		}
+		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+			var err error
+			resp, err = c.notebookClient.ListInstances(ctx, req, settings.GRPC...)
+			return err
+		}, opts...)
+		if err != nil {
+			return nil, "", err
+		}
+
+		it.Response = resp
+		return resp.Instances, resp.NextPageToken, nil
+	}
+	fetch := func(pageSize int, pageToken string) (string, error) {
+		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
+		if err != nil {
+			return "", err
+		}
+		it.items = append(it.items, items...)
+		return nextPageToken, nil
+	}
+	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
+	it.pageInfo.MaxSize = int(req.PageSize)
+	it.pageInfo.Token = req.PageToken
+	return it
+}
+
+// GetInstance gets details of a single Instance.
+func (c *NotebookClient) GetInstance(ctx context.Context, req *notebookspb.GetInstanceRequest, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.GetInstance[0:len(c.CallOptions.GetInstance):len(c.CallOptions.GetInstance)], opts...)
+	var resp *notebookspb.Instance
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.GetInstance(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+// CreateInstance creates a new Instance in a given project and location.
+func (c *NotebookClient) CreateInstance(ctx context.Context, req *notebookspb.CreateInstanceRequest, opts ...gax.CallOption) (*CreateInstanceOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.CreateInstance[0:len(c.CallOptions.CreateInstance):len(c.CallOptions.CreateInstance)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.CreateInstance(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &CreateInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// RegisterInstance registers an existing legacy notebook instance to the Notebooks API server.
+// Legacy instances are instances created with the legacy Compute Engine
+// calls. They are not manageable by the Notebooks API out of the box. This
+// call makes these instances manageable by the Notebooks API.
+func (c *NotebookClient) RegisterInstance(ctx context.Context, req *notebookspb.RegisterInstanceRequest, opts ...gax.CallOption) (*RegisterInstanceOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.RegisterInstance[0:len(c.CallOptions.RegisterInstance):len(c.CallOptions.RegisterInstance)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.RegisterInstance(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &RegisterInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// SetInstanceAccelerator updates the guest accelerators of a single Instance.
+func (c *NotebookClient) SetInstanceAccelerator(ctx context.Context, req *notebookspb.SetInstanceAcceleratorRequest, opts ...gax.CallOption) (*SetInstanceAcceleratorOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.SetInstanceAccelerator[0:len(c.CallOptions.SetInstanceAccelerator):len(c.CallOptions.SetInstanceAccelerator)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.SetInstanceAccelerator(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &SetInstanceAcceleratorOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// SetInstanceMachineType updates the machine type of a single Instance.
+func (c *NotebookClient) SetInstanceMachineType(ctx context.Context, req *notebookspb.SetInstanceMachineTypeRequest, opts ...gax.CallOption) (*SetInstanceMachineTypeOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.SetInstanceMachineType[0:len(c.CallOptions.SetInstanceMachineType):len(c.CallOptions.SetInstanceMachineType)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.SetInstanceMachineType(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &SetInstanceMachineTypeOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// SetInstanceLabels updates the labels of an Instance.
+func (c *NotebookClient) SetInstanceLabels(ctx context.Context, req *notebookspb.SetInstanceLabelsRequest, opts ...gax.CallOption) (*SetInstanceLabelsOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.SetInstanceLabels[0:len(c.CallOptions.SetInstanceLabels):len(c.CallOptions.SetInstanceLabels)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.SetInstanceLabels(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &SetInstanceLabelsOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// DeleteInstance deletes a single Instance.
+func (c *NotebookClient) DeleteInstance(ctx context.Context, req *notebookspb.DeleteInstanceRequest, opts ...gax.CallOption) (*DeleteInstanceOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.DeleteInstance[0:len(c.CallOptions.DeleteInstance):len(c.CallOptions.DeleteInstance)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.DeleteInstance(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &DeleteInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// StartInstance starts a notebook instance.
+func (c *NotebookClient) StartInstance(ctx context.Context, req *notebookspb.StartInstanceRequest, opts ...gax.CallOption) (*StartInstanceOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.StartInstance[0:len(c.CallOptions.StartInstance):len(c.CallOptions.StartInstance)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.StartInstance(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &StartInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// StopInstance stops a notebook instance.
+func (c *NotebookClient) StopInstance(ctx context.Context, req *notebookspb.StopInstanceRequest, opts ...gax.CallOption) (*StopInstanceOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.StopInstance[0:len(c.CallOptions.StopInstance):len(c.CallOptions.StopInstance)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.StopInstance(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &StopInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// ResetInstance resets a notebook instance.
+func (c *NotebookClient) ResetInstance(ctx context.Context, req *notebookspb.ResetInstanceRequest, opts ...gax.CallOption) (*ResetInstanceOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.ResetInstance[0:len(c.CallOptions.ResetInstance):len(c.CallOptions.ResetInstance)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.ResetInstance(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &ResetInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// ReportInstanceInfo allows notebook instances to
+// report their latest instance information to the Notebooks
+// API server. The server will merge the reported information to
+// the instance metadata store. Do not use this method directly.
+func (c *NotebookClient) ReportInstanceInfo(ctx context.Context, req *notebookspb.ReportInstanceInfoRequest, opts ...gax.CallOption) (*ReportInstanceInfoOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.ReportInstanceInfo[0:len(c.CallOptions.ReportInstanceInfo):len(c.CallOptions.ReportInstanceInfo)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.ReportInstanceInfo(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &ReportInstanceInfoOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// IsInstanceUpgradeable check if a notebook instance is upgradable.
+func (c *NotebookClient) IsInstanceUpgradeable(ctx context.Context, req *notebookspb.IsInstanceUpgradeableRequest, opts ...gax.CallOption) (*notebookspb.IsInstanceUpgradeableResponse, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "notebook_instance", url.QueryEscape(req.GetNotebookInstance())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.IsInstanceUpgradeable[0:len(c.CallOptions.IsInstanceUpgradeable):len(c.CallOptions.IsInstanceUpgradeable)], opts...)
+	var resp *notebookspb.IsInstanceUpgradeableResponse
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.IsInstanceUpgradeable(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+// UpgradeInstance upgrades a notebook instance to the latest version.
+func (c *NotebookClient) UpgradeInstance(ctx context.Context, req *notebookspb.UpgradeInstanceRequest, opts ...gax.CallOption) (*UpgradeInstanceOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.UpgradeInstance[0:len(c.CallOptions.UpgradeInstance):len(c.CallOptions.UpgradeInstance)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.UpgradeInstance(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &UpgradeInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// UpgradeInstanceInternal allows notebook instances to
+// call this endpoint to upgrade themselves. Do not use this method directly.
+func (c *NotebookClient) UpgradeInstanceInternal(ctx context.Context, req *notebookspb.UpgradeInstanceInternalRequest, opts ...gax.CallOption) (*UpgradeInstanceInternalOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.UpgradeInstanceInternal[0:len(c.CallOptions.UpgradeInstanceInternal):len(c.CallOptions.UpgradeInstanceInternal)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.UpgradeInstanceInternal(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &UpgradeInstanceInternalOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// ListEnvironments lists environments in a project.
+func (c *NotebookClient) ListEnvironments(ctx context.Context, req *notebookspb.ListEnvironmentsRequest, opts ...gax.CallOption) *EnvironmentIterator {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.ListEnvironments[0:len(c.CallOptions.ListEnvironments):len(c.CallOptions.ListEnvironments)], opts...)
+	it := &EnvironmentIterator{}
+	req = proto.Clone(req).(*notebookspb.ListEnvironmentsRequest)
+	it.InternalFetch = func(pageSize int, pageToken string) ([]*notebookspb.Environment, string, error) {
+		var resp *notebookspb.ListEnvironmentsResponse
+		req.PageToken = pageToken
+		if pageSize > math.MaxInt32 {
+			req.PageSize = math.MaxInt32
+		} else {
+			req.PageSize = int32(pageSize)
+		}
+		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+			var err error
+			resp, err = c.notebookClient.ListEnvironments(ctx, req, settings.GRPC...)
+			return err
+		}, opts...)
+		if err != nil {
+			return nil, "", err
+		}
+
+		it.Response = resp
+		return resp.Environments, resp.NextPageToken, nil
+	}
+	fetch := func(pageSize int, pageToken string) (string, error) {
+		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
+		if err != nil {
+			return "", err
+		}
+		it.items = append(it.items, items...)
+		return nextPageToken, nil
+	}
+	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
+	it.pageInfo.MaxSize = int(req.PageSize)
+	it.pageInfo.Token = req.PageToken
+	return it
+}
+
+// GetEnvironment gets details of a single Environment.
+func (c *NotebookClient) GetEnvironment(ctx context.Context, req *notebookspb.GetEnvironmentRequest, opts ...gax.CallOption) (*notebookspb.Environment, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.GetEnvironment[0:len(c.CallOptions.GetEnvironment):len(c.CallOptions.GetEnvironment)], opts...)
+	var resp *notebookspb.Environment
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.GetEnvironment(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+// CreateEnvironment creates a new Environment.
+func (c *NotebookClient) CreateEnvironment(ctx context.Context, req *notebookspb.CreateEnvironmentRequest, opts ...gax.CallOption) (*CreateEnvironmentOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.CreateEnvironment[0:len(c.CallOptions.CreateEnvironment):len(c.CallOptions.CreateEnvironment)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.CreateEnvironment(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &CreateEnvironmentOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// DeleteEnvironment deletes a single Environment.
+func (c *NotebookClient) DeleteEnvironment(ctx context.Context, req *notebookspb.DeleteEnvironmentRequest, opts ...gax.CallOption) (*DeleteEnvironmentOperation, error) {
+	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
+	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
+	opts = append(c.CallOptions.DeleteEnvironment[0:len(c.CallOptions.DeleteEnvironment):len(c.CallOptions.DeleteEnvironment)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.notebookClient.DeleteEnvironment(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &DeleteEnvironmentOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// CreateEnvironmentOperation manages a long-running operation from CreateEnvironment.
+type CreateEnvironmentOperation struct {
+	lro *longrunning.Operation
+}
+
+// CreateEnvironmentOperation returns a new CreateEnvironmentOperation from a given name.
+// The name must be that of a previously created CreateEnvironmentOperation, possibly from a different process.
+func (c *NotebookClient) CreateEnvironmentOperation(name string) *CreateEnvironmentOperation {
+	return &CreateEnvironmentOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *CreateEnvironmentOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Environment, error) {
+	var resp notebookspb.Environment
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *CreateEnvironmentOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Environment, error) {
+	var resp notebookspb.Environment
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *CreateEnvironmentOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *CreateEnvironmentOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *CreateEnvironmentOperation) Name() string {
+	return op.lro.Name()
+}
+
+// CreateInstanceOperation manages a long-running operation from CreateInstance.
+type CreateInstanceOperation struct {
+	lro *longrunning.Operation
+}
+
+// CreateInstanceOperation returns a new CreateInstanceOperation from a given name.
+// The name must be that of a previously created CreateInstanceOperation, possibly from a different process.
+func (c *NotebookClient) CreateInstanceOperation(name string) *CreateInstanceOperation {
+	return &CreateInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *CreateInstanceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *CreateInstanceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *CreateInstanceOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *CreateInstanceOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *CreateInstanceOperation) Name() string {
+	return op.lro.Name()
+}
+
+// DeleteEnvironmentOperation manages a long-running operation from DeleteEnvironment.
+type DeleteEnvironmentOperation struct {
+	lro *longrunning.Operation
+}
+
+// DeleteEnvironmentOperation returns a new DeleteEnvironmentOperation from a given name.
+// The name must be that of a previously created DeleteEnvironmentOperation, possibly from a different process.
+func (c *NotebookClient) DeleteEnvironmentOperation(name string) *DeleteEnvironmentOperation {
+	return &DeleteEnvironmentOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *DeleteEnvironmentOperation) Wait(ctx context.Context, opts ...gax.CallOption) error {
+	return op.lro.WaitWithInterval(ctx, nil, time.Minute, opts...)
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *DeleteEnvironmentOperation) Poll(ctx context.Context, opts ...gax.CallOption) error {
+	return op.lro.Poll(ctx, nil, opts...)
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *DeleteEnvironmentOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *DeleteEnvironmentOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *DeleteEnvironmentOperation) Name() string {
+	return op.lro.Name()
+}
+
+// DeleteInstanceOperation manages a long-running operation from DeleteInstance.
+type DeleteInstanceOperation struct {
+	lro *longrunning.Operation
+}
+
+// DeleteInstanceOperation returns a new DeleteInstanceOperation from a given name.
+// The name must be that of a previously created DeleteInstanceOperation, possibly from a different process.
+func (c *NotebookClient) DeleteInstanceOperation(name string) *DeleteInstanceOperation {
+	return &DeleteInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *DeleteInstanceOperation) Wait(ctx context.Context, opts ...gax.CallOption) error {
+	return op.lro.WaitWithInterval(ctx, nil, time.Minute, opts...)
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *DeleteInstanceOperation) Poll(ctx context.Context, opts ...gax.CallOption) error {
+	return op.lro.Poll(ctx, nil, opts...)
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *DeleteInstanceOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *DeleteInstanceOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *DeleteInstanceOperation) Name() string {
+	return op.lro.Name()
+}
+
+// RegisterInstanceOperation manages a long-running operation from RegisterInstance.
+type RegisterInstanceOperation struct {
+	lro *longrunning.Operation
+}
+
+// RegisterInstanceOperation returns a new RegisterInstanceOperation from a given name.
+// The name must be that of a previously created RegisterInstanceOperation, possibly from a different process.
+func (c *NotebookClient) RegisterInstanceOperation(name string) *RegisterInstanceOperation {
+	return &RegisterInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *RegisterInstanceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *RegisterInstanceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *RegisterInstanceOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *RegisterInstanceOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *RegisterInstanceOperation) Name() string {
+	return op.lro.Name()
+}
+
+// ReportInstanceInfoOperation manages a long-running operation from ReportInstanceInfo.
+type ReportInstanceInfoOperation struct {
+	lro *longrunning.Operation
+}
+
+// ReportInstanceInfoOperation returns a new ReportInstanceInfoOperation from a given name.
+// The name must be that of a previously created ReportInstanceInfoOperation, possibly from a different process.
+func (c *NotebookClient) ReportInstanceInfoOperation(name string) *ReportInstanceInfoOperation {
+	return &ReportInstanceInfoOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *ReportInstanceInfoOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *ReportInstanceInfoOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *ReportInstanceInfoOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *ReportInstanceInfoOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *ReportInstanceInfoOperation) Name() string {
+	return op.lro.Name()
+}
+
+// ResetInstanceOperation manages a long-running operation from ResetInstance.
+type ResetInstanceOperation struct {
+	lro *longrunning.Operation
+}
+
+// ResetInstanceOperation returns a new ResetInstanceOperation from a given name.
+// The name must be that of a previously created ResetInstanceOperation, possibly from a different process.
+func (c *NotebookClient) ResetInstanceOperation(name string) *ResetInstanceOperation {
+	return &ResetInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *ResetInstanceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *ResetInstanceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *ResetInstanceOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *ResetInstanceOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *ResetInstanceOperation) Name() string {
+	return op.lro.Name()
+}
+
+// SetInstanceAcceleratorOperation manages a long-running operation from SetInstanceAccelerator.
+type SetInstanceAcceleratorOperation struct {
+	lro *longrunning.Operation
+}
+
+// SetInstanceAcceleratorOperation returns a new SetInstanceAcceleratorOperation from a given name.
+// The name must be that of a previously created SetInstanceAcceleratorOperation, possibly from a different process.
+func (c *NotebookClient) SetInstanceAcceleratorOperation(name string) *SetInstanceAcceleratorOperation {
+	return &SetInstanceAcceleratorOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *SetInstanceAcceleratorOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *SetInstanceAcceleratorOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *SetInstanceAcceleratorOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *SetInstanceAcceleratorOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *SetInstanceAcceleratorOperation) Name() string {
+	return op.lro.Name()
+}
+
+// SetInstanceLabelsOperation manages a long-running operation from SetInstanceLabels.
+type SetInstanceLabelsOperation struct {
+	lro *longrunning.Operation
+}
+
+// SetInstanceLabelsOperation returns a new SetInstanceLabelsOperation from a given name.
+// The name must be that of a previously created SetInstanceLabelsOperation, possibly from a different process.
+func (c *NotebookClient) SetInstanceLabelsOperation(name string) *SetInstanceLabelsOperation {
+	return &SetInstanceLabelsOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *SetInstanceLabelsOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *SetInstanceLabelsOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *SetInstanceLabelsOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *SetInstanceLabelsOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *SetInstanceLabelsOperation) Name() string {
+	return op.lro.Name()
+}
+
+// SetInstanceMachineTypeOperation manages a long-running operation from SetInstanceMachineType.
+type SetInstanceMachineTypeOperation struct {
+	lro *longrunning.Operation
+}
+
+// SetInstanceMachineTypeOperation returns a new SetInstanceMachineTypeOperation from a given name.
+// The name must be that of a previously created SetInstanceMachineTypeOperation, possibly from a different process.
+func (c *NotebookClient) SetInstanceMachineTypeOperation(name string) *SetInstanceMachineTypeOperation {
+	return &SetInstanceMachineTypeOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *SetInstanceMachineTypeOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *SetInstanceMachineTypeOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *SetInstanceMachineTypeOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *SetInstanceMachineTypeOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *SetInstanceMachineTypeOperation) Name() string {
+	return op.lro.Name()
+}
+
+// StartInstanceOperation manages a long-running operation from StartInstance.
+type StartInstanceOperation struct {
+	lro *longrunning.Operation
+}
+
+// StartInstanceOperation returns a new StartInstanceOperation from a given name.
+// The name must be that of a previously created StartInstanceOperation, possibly from a different process.
+func (c *NotebookClient) StartInstanceOperation(name string) *StartInstanceOperation {
+	return &StartInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *StartInstanceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *StartInstanceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *StartInstanceOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *StartInstanceOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *StartInstanceOperation) Name() string {
+	return op.lro.Name()
+}
+
+// StopInstanceOperation manages a long-running operation from StopInstance.
+type StopInstanceOperation struct {
+	lro *longrunning.Operation
+}
+
+// StopInstanceOperation returns a new StopInstanceOperation from a given name.
+// The name must be that of a previously created StopInstanceOperation, possibly from a different process.
+func (c *NotebookClient) StopInstanceOperation(name string) *StopInstanceOperation {
+	return &StopInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *StopInstanceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *StopInstanceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *StopInstanceOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *StopInstanceOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *StopInstanceOperation) Name() string {
+	return op.lro.Name()
+}
+
+// UpgradeInstanceOperation manages a long-running operation from UpgradeInstance.
+type UpgradeInstanceOperation struct {
+	lro *longrunning.Operation
+}
+
+// UpgradeInstanceOperation returns a new UpgradeInstanceOperation from a given name.
+// The name must be that of a previously created UpgradeInstanceOperation, possibly from a different process.
+func (c *NotebookClient) UpgradeInstanceOperation(name string) *UpgradeInstanceOperation {
+	return &UpgradeInstanceOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *UpgradeInstanceOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *UpgradeInstanceOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *UpgradeInstanceOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *UpgradeInstanceOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *UpgradeInstanceOperation) Name() string {
+	return op.lro.Name()
+}
+
+// UpgradeInstanceInternalOperation manages a long-running operation from UpgradeInstanceInternal.
+type UpgradeInstanceInternalOperation struct {
+	lro *longrunning.Operation
+}
+
+// UpgradeInstanceInternalOperation returns a new UpgradeInstanceInternalOperation from a given name.
+// The name must be that of a previously created UpgradeInstanceInternalOperation, possibly from a different process.
+func (c *NotebookClient) UpgradeInstanceInternalOperation(name string) *UpgradeInstanceInternalOperation {
+	return &UpgradeInstanceInternalOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *UpgradeInstanceInternalOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *UpgradeInstanceInternalOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*notebookspb.Instance, error) {
+	var resp notebookspb.Instance
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *UpgradeInstanceInternalOperation) Metadata() (*notebookspb.OperationMetadata, error) {
+	var meta notebookspb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *UpgradeInstanceInternalOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *UpgradeInstanceInternalOperation) Name() string {
+	return op.lro.Name()
+}
+
+// EnvironmentIterator manages a stream of *notebookspb.Environment.
+type EnvironmentIterator struct {
+	items    []*notebookspb.Environment
+	pageInfo *iterator.PageInfo
+	nextFunc func() error
+
+	// Response is the raw response for the current page.
+	// It must be cast to the RPC response type.
+	// Calling Next() or InternalFetch() updates this value.
+	Response interface{}
+
+	// InternalFetch is for use by the Google Cloud Libraries only.
+	// It is not part of the stable interface of this package.
+	//
+	// InternalFetch returns results from a single call to the underlying RPC.
+	// The number of results is no greater than pageSize.
+	// If there are no more results, nextPageToken is empty and err is nil.
+	InternalFetch func(pageSize int, pageToken string) (results []*notebookspb.Environment, nextPageToken string, err error)
+}
+
+// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
+func (it *EnvironmentIterator) PageInfo() *iterator.PageInfo {
+	return it.pageInfo
+}
+
+// Next returns the next result. Its second return value is iterator.Done if there are no more
+// results. Once Next returns Done, all subsequent calls will return Done.
+func (it *EnvironmentIterator) Next() (*notebookspb.Environment, error) {
+	var item *notebookspb.Environment
+	if err := it.nextFunc(); err != nil {
+		return item, err
+	}
+	item = it.items[0]
+	it.items = it.items[1:]
+	return item, nil
+}
+
+func (it *EnvironmentIterator) bufLen() int {
+	return len(it.items)
+}
+
+func (it *EnvironmentIterator) takeBuf() interface{} {
+	b := it.items
+	it.items = nil
+	return b
+}
+
+// InstanceIterator manages a stream of *notebookspb.Instance.
+type InstanceIterator struct {
+	items    []*notebookspb.Instance
+	pageInfo *iterator.PageInfo
+	nextFunc func() error
+
+	// Response is the raw response for the current page.
+	// It must be cast to the RPC response type.
+	// Calling Next() or InternalFetch() updates this value.
+	Response interface{}
+
+	// InternalFetch is for use by the Google Cloud Libraries only.
+	// It is not part of the stable interface of this package.
+	//
+	// InternalFetch returns results from a single call to the underlying RPC.
+	// The number of results is no greater than pageSize.
+	// If there are no more results, nextPageToken is empty and err is nil.
+	InternalFetch func(pageSize int, pageToken string) (results []*notebookspb.Instance, nextPageToken string, err error)
+}
+
+// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
+func (it *InstanceIterator) PageInfo() *iterator.PageInfo {
+	return it.pageInfo
+}
+
+// Next returns the next result. Its second return value is iterator.Done if there are no more
+// results. Once Next returns Done, all subsequent calls will return Done.
+func (it *InstanceIterator) Next() (*notebookspb.Instance, error) {
+	var item *notebookspb.Instance
+	if err := it.nextFunc(); err != nil {
+		return item, err
+	}
+	item = it.items[0]
+	it.items = it.items[1:]
+	return item, nil
+}
+
+func (it *InstanceIterator) bufLen() int {
+	return len(it.items)
+}
+
+func (it *InstanceIterator) takeBuf() interface{} {
+	b := it.items
+	it.items = nil
+	return b
+}
diff --git a/notebooks/apiv1beta1/notebook_client_example_test.go b/notebooks/apiv1beta1/notebook_client_example_test.go
new file mode 100644
index 0000000..cc06e89
--- /dev/null
+++ b/notebooks/apiv1beta1/notebook_client_example_test.go
@@ -0,0 +1,495 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Code generated by protoc-gen-go_gapic. DO NOT EDIT.
+
+package notebooks_test
+
+import (
+	"context"
+
+	notebooks "cloud.google.com/go/notebooks/apiv1beta1"
+	"google.golang.org/api/iterator"
+	notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+)
+
+func ExampleNewNotebookClient() {
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use client.
+	_ = c
+}
+
+func ExampleNotebookClient_ListInstances() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+	// import "google.golang.org/api/iterator"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.ListInstancesRequest{
+		// TODO: Fill request struct fields.
+	}
+	it := c.ListInstances(ctx, req)
+	for {
+		resp, err := it.Next()
+		if err == iterator.Done {
+			break
+		}
+		if err != nil {
+			// TODO: Handle error.
+		}
+		// TODO: Use resp.
+		_ = resp
+	}
+}
+
+func ExampleNotebookClient_GetInstance() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.GetInstanceRequest{
+		// TODO: Fill request struct fields.
+	}
+	resp, err := c.GetInstance(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_CreateInstance() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.CreateInstanceRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.CreateInstance(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_RegisterInstance() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.RegisterInstanceRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.RegisterInstance(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_SetInstanceAccelerator() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.SetInstanceAcceleratorRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.SetInstanceAccelerator(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_SetInstanceMachineType() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.SetInstanceMachineTypeRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.SetInstanceMachineType(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_SetInstanceLabels() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.SetInstanceLabelsRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.SetInstanceLabels(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_DeleteInstance() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.DeleteInstanceRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.DeleteInstance(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	err = op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+}
+
+func ExampleNotebookClient_StartInstance() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.StartInstanceRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.StartInstance(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_StopInstance() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.StopInstanceRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.StopInstance(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_ResetInstance() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.ResetInstanceRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.ResetInstance(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_ReportInstanceInfo() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.ReportInstanceInfoRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.ReportInstanceInfo(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_IsInstanceUpgradeable() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.IsInstanceUpgradeableRequest{
+		// TODO: Fill request struct fields.
+	}
+	resp, err := c.IsInstanceUpgradeable(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_UpgradeInstance() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.UpgradeInstanceRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.UpgradeInstance(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_UpgradeInstanceInternal() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.UpgradeInstanceInternalRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.UpgradeInstanceInternal(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_ListEnvironments() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+	// import "google.golang.org/api/iterator"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.ListEnvironmentsRequest{
+		// TODO: Fill request struct fields.
+	}
+	it := c.ListEnvironments(ctx, req)
+	for {
+		resp, err := it.Next()
+		if err == iterator.Done {
+			break
+		}
+		if err != nil {
+			// TODO: Handle error.
+		}
+		// TODO: Use resp.
+		_ = resp
+	}
+}
+
+func ExampleNotebookClient_GetEnvironment() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.GetEnvironmentRequest{
+		// TODO: Fill request struct fields.
+	}
+	resp, err := c.GetEnvironment(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_CreateEnvironment() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.CreateEnvironmentRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.CreateEnvironment(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleNotebookClient_DeleteEnvironment() {
+	// import notebookspb "google.golang.org/genproto/googleapis/cloud/notebooks/v1beta1"
+
+	ctx := context.Background()
+	c, err := notebooks.NewNotebookClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &notebookspb.DeleteEnvironmentRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.DeleteEnvironment(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	err = op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+}