// Copyright 2026 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 compute

import (
	"bytes"
	"context"
	"fmt"
	"log/slog"
	"math"
	"net/http"
	"net/url"
	"sort"
	"time"

	computepb "cloud.google.com/go/compute/apiv1beta/computepb"
	gax "github.com/googleapis/gax-go/v2"
	"github.com/googleapis/gax-go/v2/callctx"
	"google.golang.org/api/iterator"
	"google.golang.org/api/option"
	"google.golang.org/api/option/internaloption"
	httptransport "google.golang.org/api/transport/http"
	"google.golang.org/grpc"
	"google.golang.org/protobuf/encoding/protojson"
	"google.golang.org/protobuf/proto"
)

var newBackendServicesClientHook clientHook

// BackendServicesCallOptions contains the retry settings for each method of BackendServicesClient.
type BackendServicesCallOptions struct {
	AddSignedUrlKey              []gax.CallOption
	AggregatedList               []gax.CallOption
	Delete                       []gax.CallOption
	DeleteSignedUrlKey           []gax.CallOption
	Get                          []gax.CallOption
	GetEffectiveSecurityPolicies []gax.CallOption
	GetHealth                    []gax.CallOption
	GetIamPolicy                 []gax.CallOption
	Insert                       []gax.CallOption
	List                         []gax.CallOption
	ListUsable                   []gax.CallOption
	Patch                        []gax.CallOption
	SetEdgeSecurityPolicy        []gax.CallOption
	SetIamPolicy                 []gax.CallOption
	SetSecurityPolicy            []gax.CallOption
	TestIamPermissions           []gax.CallOption
	Update                       []gax.CallOption
}

func defaultBackendServicesRESTCallOptions() *BackendServicesCallOptions {
	return &BackendServicesCallOptions{
		AddSignedUrlKey: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		AggregatedList: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable)
			}),
		},
		Delete: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		DeleteSignedUrlKey: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		Get: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable)
			}),
		},
		GetEffectiveSecurityPolicies: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable)
			}),
		},
		GetHealth: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		GetIamPolicy: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable)
			}),
		},
		Insert: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		List: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable)
			}),
		},
		ListUsable: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
			gax.WithRetry(func() gax.Retryer {
				return gax.OnHTTPCodes(gax.Backoff{
					Initial:    100 * time.Millisecond,
					Max:        60000 * time.Millisecond,
					Multiplier: 1.30,
				},
					http.StatusGatewayTimeout,
					http.StatusServiceUnavailable)
			}),
		},
		Patch: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		SetEdgeSecurityPolicy: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		SetIamPolicy: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		SetSecurityPolicy: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		TestIamPermissions: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
		Update: []gax.CallOption{
			gax.WithTimeout(600000 * time.Millisecond),
		},
	}
}

// internalBackendServicesClient is an interface that defines the methods available from Google Compute Engine API.
type internalBackendServicesClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	AddSignedUrlKey(context.Context, *computepb.AddSignedUrlKeyBackendServiceRequest, ...gax.CallOption) (*Operation, error)
	AggregatedList(context.Context, *computepb.AggregatedListBackendServicesRequest, ...gax.CallOption) *BackendServicesScopedListPairIterator
	Delete(context.Context, *computepb.DeleteBackendServiceRequest, ...gax.CallOption) (*Operation, error)
	DeleteSignedUrlKey(context.Context, *computepb.DeleteSignedUrlKeyBackendServiceRequest, ...gax.CallOption) (*Operation, error)
	Get(context.Context, *computepb.GetBackendServiceRequest, ...gax.CallOption) (*computepb.BackendService, error)
	GetEffectiveSecurityPolicies(context.Context, *computepb.GetEffectiveSecurityPoliciesBackendServiceRequest, ...gax.CallOption) (*computepb.BackendServicesGetEffectiveSecurityPoliciesResponse, error)
	GetHealth(context.Context, *computepb.GetHealthBackendServiceRequest, ...gax.CallOption) (*computepb.BackendServiceGroupHealth, error)
	GetIamPolicy(context.Context, *computepb.GetIamPolicyBackendServiceRequest, ...gax.CallOption) (*computepb.Policy, error)
	Insert(context.Context, *computepb.InsertBackendServiceRequest, ...gax.CallOption) (*Operation, error)
	List(context.Context, *computepb.ListBackendServicesRequest, ...gax.CallOption) *BackendServiceIterator
	ListUsable(context.Context, *computepb.ListUsableBackendServicesRequest, ...gax.CallOption) *BackendServiceIterator
	Patch(context.Context, *computepb.PatchBackendServiceRequest, ...gax.CallOption) (*Operation, error)
	SetEdgeSecurityPolicy(context.Context, *computepb.SetEdgeSecurityPolicyBackendServiceRequest, ...gax.CallOption) (*Operation, error)
	SetIamPolicy(context.Context, *computepb.SetIamPolicyBackendServiceRequest, ...gax.CallOption) (*computepb.Policy, error)
	SetSecurityPolicy(context.Context, *computepb.SetSecurityPolicyBackendServiceRequest, ...gax.CallOption) (*Operation, error)
	TestIamPermissions(context.Context, *computepb.TestIamPermissionsBackendServiceRequest, ...gax.CallOption) (*computepb.TestPermissionsResponse, error)
	Update(context.Context, *computepb.UpdateBackendServiceRequest, ...gax.CallOption) (*Operation, error)
}

// BackendServicesClient is a client for interacting with Google Compute Engine API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// The BackendServices API.
type BackendServicesClient struct {
	// The internal transport-dependent client.
	internalClient internalBackendServicesClient

	// The call options for this service.
	CallOptions *BackendServicesCallOptions
}

// Wrapper methods routed to the internal client.

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *BackendServicesClient) Close() error {
	return c.internalClient.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 *BackendServicesClient) setGoogleClientInfo(keyval ...string) {
	c.internalClient.setGoogleClientInfo(keyval...)
}

// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *BackendServicesClient) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// AddSignedUrlKey adds a key for validating requests with signed URLs for this backend
// service.
func (c *BackendServicesClient) AddSignedUrlKey(ctx context.Context, req *computepb.AddSignedUrlKeyBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	return c.internalClient.AddSignedUrlKey(ctx, req, opts...)
}

// AggregatedList retrieves the list of all BackendService resources, regional and global,
// available to the specified project.
//
// To prevent failure, it is recommended that you set the
// returnPartialSuccess parameter to true.
func (c *BackendServicesClient) AggregatedList(ctx context.Context, req *computepb.AggregatedListBackendServicesRequest, opts ...gax.CallOption) *BackendServicesScopedListPairIterator {
	return c.internalClient.AggregatedList(ctx, req, opts...)
}

// Delete deletes the specified BackendService resource.
func (c *BackendServicesClient) Delete(ctx context.Context, req *computepb.DeleteBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	return c.internalClient.Delete(ctx, req, opts...)
}

// DeleteSignedUrlKey deletes a key for validating requests with signed URLs for this backend
// service.
func (c *BackendServicesClient) DeleteSignedUrlKey(ctx context.Context, req *computepb.DeleteSignedUrlKeyBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	return c.internalClient.DeleteSignedUrlKey(ctx, req, opts...)
}

// Get returns the specified BackendService resource.
func (c *BackendServicesClient) Get(ctx context.Context, req *computepb.GetBackendServiceRequest, opts ...gax.CallOption) (*computepb.BackendService, error) {
	return c.internalClient.Get(ctx, req, opts...)
}

// GetEffectiveSecurityPolicies returns effective security policies applied to this backend service.
func (c *BackendServicesClient) GetEffectiveSecurityPolicies(ctx context.Context, req *computepb.GetEffectiveSecurityPoliciesBackendServiceRequest, opts ...gax.CallOption) (*computepb.BackendServicesGetEffectiveSecurityPoliciesResponse, error) {
	return c.internalClient.GetEffectiveSecurityPolicies(ctx, req, opts...)
}

// GetHealth gets the most recent health check results for this
// BackendService.
//
// Example request body:
//
// {
// “group”: “/zones/us-east1-b/instanceGroups/lb-backend-example”
// }
func (c *BackendServicesClient) GetHealth(ctx context.Context, req *computepb.GetHealthBackendServiceRequest, opts ...gax.CallOption) (*computepb.BackendServiceGroupHealth, error) {
	return c.internalClient.GetHealth(ctx, req, opts...)
}

// GetIamPolicy gets the access control policy for a resource. May be empty if no such
// policy or resource exists.
func (c *BackendServicesClient) GetIamPolicy(ctx context.Context, req *computepb.GetIamPolicyBackendServiceRequest, opts ...gax.CallOption) (*computepb.Policy, error) {
	return c.internalClient.GetIamPolicy(ctx, req, opts...)
}

// Insert creates a BackendService resource in the specified project using
// the data included in the request. For more information, see
// Backend services overview.
func (c *BackendServicesClient) Insert(ctx context.Context, req *computepb.InsertBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	return c.internalClient.Insert(ctx, req, opts...)
}

// List retrieves the list of BackendService resources available to the specified
// project.
func (c *BackendServicesClient) List(ctx context.Context, req *computepb.ListBackendServicesRequest, opts ...gax.CallOption) *BackendServiceIterator {
	return c.internalClient.List(ctx, req, opts...)
}

// ListUsable retrieves a list of all usable backend services in the specified project.
func (c *BackendServicesClient) ListUsable(ctx context.Context, req *computepb.ListUsableBackendServicesRequest, opts ...gax.CallOption) *BackendServiceIterator {
	return c.internalClient.ListUsable(ctx, req, opts...)
}

// Patch patches the specified BackendService resource with the data included in the
// request. For more information, see
// Backend services overview. This method
// supports PATCH semantics and uses the JSON merge
// patch format and processing rules.
func (c *BackendServicesClient) Patch(ctx context.Context, req *computepb.PatchBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	return c.internalClient.Patch(ctx, req, opts...)
}

// SetEdgeSecurityPolicy sets the edge security policy for the specified backend service.
func (c *BackendServicesClient) SetEdgeSecurityPolicy(ctx context.Context, req *computepb.SetEdgeSecurityPolicyBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	return c.internalClient.SetEdgeSecurityPolicy(ctx, req, opts...)
}

// SetIamPolicy sets the access control policy on the specified resource.
// Replaces any existing policy.
func (c *BackendServicesClient) SetIamPolicy(ctx context.Context, req *computepb.SetIamPolicyBackendServiceRequest, opts ...gax.CallOption) (*computepb.Policy, error) {
	return c.internalClient.SetIamPolicy(ctx, req, opts...)
}

// SetSecurityPolicy sets the Google Cloud Armor security policy for the specified backend
// service. For more information, seeGoogle
// Cloud Armor Overview
func (c *BackendServicesClient) SetSecurityPolicy(ctx context.Context, req *computepb.SetSecurityPolicyBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	return c.internalClient.SetSecurityPolicy(ctx, req, opts...)
}

// TestIamPermissions returns permissions that a caller has on the specified resource.
func (c *BackendServicesClient) TestIamPermissions(ctx context.Context, req *computepb.TestIamPermissionsBackendServiceRequest, opts ...gax.CallOption) (*computepb.TestPermissionsResponse, error) {
	return c.internalClient.TestIamPermissions(ctx, req, opts...)
}

// Update updates the specified BackendService resource with the data included in the
// request. For more information, seeBackend
// services overview.
func (c *BackendServicesClient) Update(ctx context.Context, req *computepb.UpdateBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	return c.internalClient.Update(ctx, req, opts...)
}

// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type backendServicesRESTClient struct {
	// The http endpoint to connect to.
	endpoint string

	// The http client.
	httpClient *http.Client

	// operationClient is used to call the operation-specific management service.
	operationClient *GlobalOperationsClient

	// The x-goog-* headers to be sent with each request.
	xGoogHeaders []string

	// Points back to the CallOptions field of the containing BackendServicesClient
	CallOptions **BackendServicesCallOptions

	logger *slog.Logger
}

// NewBackendServicesRESTClient creates a new backend services rest client.
//
// The BackendServices API.
func NewBackendServicesRESTClient(ctx context.Context, opts ...option.ClientOption) (*BackendServicesClient, error) {
	clientOpts := append(defaultBackendServicesRESTClientOptions(), opts...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		clientOpts = append(clientOpts, internaloption.WithTelemetryAttributes(map[string]string{
			"gcp.client.service":  "compute",
			"gcp.client.version":  getVersionClient(),
			"gcp.client.repo":     "googleapis/google-cloud-go",
			"gcp.client.artifact": "cloud.google.com/go/compute/apiv1beta",
			"gcp.client.language": "go",
			"url.domain":          "compute.googleapis.com",
		}))
	}
	httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...)
	if err != nil {
		return nil, err
	}

	callOpts := defaultBackendServicesRESTCallOptions()
	c := &backendServicesRESTClient{
		endpoint:    endpoint,
		httpClient:  httpClient,
		CallOptions: &callOpts,
		logger:      internaloption.GetLogger(opts),
	}
	c.setGoogleClientInfo()

	if gax.IsFeatureEnabled("METRICS") {
		metrics := gax.NewClientMetrics(
			gax.WithTelemetryLogger(c.logger),
			gax.WithTelemetryAttributes(map[string]string{
				gax.ClientService:  "compute",
				gax.ClientVersion:  getVersionClient(),
				gax.ClientArtifact: "cloud.google.com/go/compute/apiv1beta",
				gax.RPCSystem:      "http",
				gax.URLDomain:      "compute.googleapis.com",
			}),
		)

		callOpts.AddSignedUrlKey = append(callOpts.AddSignedUrlKey, gax.WithClientMetrics(metrics))
		callOpts.AggregatedList = append(callOpts.AggregatedList, gax.WithClientMetrics(metrics))
		callOpts.Delete = append(callOpts.Delete, gax.WithClientMetrics(metrics))
		callOpts.DeleteSignedUrlKey = append(callOpts.DeleteSignedUrlKey, gax.WithClientMetrics(metrics))
		callOpts.Get = append(callOpts.Get, gax.WithClientMetrics(metrics))
		callOpts.GetEffectiveSecurityPolicies = append(callOpts.GetEffectiveSecurityPolicies, gax.WithClientMetrics(metrics))
		callOpts.GetHealth = append(callOpts.GetHealth, gax.WithClientMetrics(metrics))
		callOpts.GetIamPolicy = append(callOpts.GetIamPolicy, gax.WithClientMetrics(metrics))
		callOpts.Insert = append(callOpts.Insert, gax.WithClientMetrics(metrics))
		callOpts.List = append(callOpts.List, gax.WithClientMetrics(metrics))
		callOpts.ListUsable = append(callOpts.ListUsable, gax.WithClientMetrics(metrics))
		callOpts.Patch = append(callOpts.Patch, gax.WithClientMetrics(metrics))
		callOpts.SetEdgeSecurityPolicy = append(callOpts.SetEdgeSecurityPolicy, gax.WithClientMetrics(metrics))
		callOpts.SetIamPolicy = append(callOpts.SetIamPolicy, gax.WithClientMetrics(metrics))
		callOpts.SetSecurityPolicy = append(callOpts.SetSecurityPolicy, gax.WithClientMetrics(metrics))
		callOpts.TestIamPermissions = append(callOpts.TestIamPermissions, gax.WithClientMetrics(metrics))
		callOpts.Update = append(callOpts.Update, gax.WithClientMetrics(metrics))
	}

	o := []option.ClientOption{
		option.WithHTTPClient(httpClient),
		option.WithEndpoint(endpoint),
	}
	opC, err := NewGlobalOperationsRESTClient(ctx, o...)
	if err != nil {
		return nil, err
	}
	c.operationClient = opC

	return &BackendServicesClient{internalClient: c, CallOptions: callOpts}, nil
}

func defaultBackendServicesRESTClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("https://compute.googleapis.com"),
		internaloption.WithDefaultEndpointTemplate("https://compute.UNIVERSE_DOMAIN"),
		internaloption.WithDefaultMTLSEndpoint("https://compute.mtls.googleapis.com"),
		internaloption.WithDefaultUniverseDomain("googleapis.com"),
		internaloption.WithDefaultAudience("https://compute.googleapis.com/"),
		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
		internaloption.EnableNewAuthLibrary(),
	}
}

// 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 *backendServicesRESTClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "rest", "UNKNOWN", "pb", protoVersion)
	c.xGoogHeaders = []string{
		"x-goog-api-client", gax.XGoogHeader(kv...),
	}
}

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *backendServicesRESTClient) Close() error {
	// Replace httpClient with nil to force cleanup.
	c.httpClient = nil
	if err := c.operationClient.Close(); err != nil {
		return err
	}
	return nil
}

// Connection returns a connection to the API service.
//
// Deprecated: This method always returns nil.
func (c *backendServicesRESTClient) Connection() *grpc.ClientConn {
	return nil
}

// AddSignedUrlKey adds a key for validating requests with signed URLs for this backend
// service.
func (c *backendServicesRESTClient) AddSignedUrlKey(ctx context.Context, req *computepb.AddSignedUrlKeyBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetSignedUrlKeyResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/addSignedUrlKey", req.GetProject(), req.GetBackendService())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/AddSignedUrlKey")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}/addSignedUrlKey")
	}
	opts = append((*c.CallOptions).AddSignedUrlKey[0:len((*c.CallOptions).AddSignedUrlKey):len((*c.CallOptions).AddSignedUrlKey)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "AddSignedUrlKey")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	op := &Operation{
		&globalOperationsHandle{
			c:       c.operationClient,
			proto:   resp,
			project: req.GetProject(),
		},
	}
	return op, nil
}

// AggregatedList retrieves the list of all BackendService resources, regional and global,
// available to the specified project.
//
// To prevent failure, it is recommended that you set the
// returnPartialSuccess parameter to true.
func (c *backendServicesRESTClient) AggregatedList(ctx context.Context, req *computepb.AggregatedListBackendServicesRequest, opts ...gax.CallOption) *BackendServicesScopedListPairIterator {
	it := &BackendServicesScopedListPairIterator{}
	req = proto.CloneOf(req)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]BackendServicesScopedListPair, string, error) {
		resp := &computepb.BackendServiceAggregatedList{}
		if pageToken != "" {
			req.PageToken = proto.String(pageToken)
		}
		if pageSize > math.MaxInt32 {
			req.MaxResults = proto.Uint32(uint32(math.MaxInt32))
		} else if pageSize != 0 {
			req.MaxResults = proto.Uint32(uint32(pageSize))
		}
		baseUrl, err := url.Parse(c.endpoint)
		if err != nil {
			return nil, "", err
		}
		baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/aggregated/backendServices", req.GetProject())

		params := url.Values{}
		if req != nil && req.Filter != nil {
			params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
		}
		if req != nil && req.IncludeAllScopes != nil {
			params.Add("includeAllScopes", fmt.Sprintf("%v", req.GetIncludeAllScopes()))
		}
		if req != nil && req.MaxResults != nil {
			params.Add("maxResults", fmt.Sprintf("%v", req.GetMaxResults()))
		}
		if req != nil && req.OrderBy != nil {
			params.Add("orderBy", fmt.Sprintf("%v", req.GetOrderBy()))
		}
		if req != nil && req.PageToken != nil {
			params.Add("pageToken", fmt.Sprintf("%v", req.GetPageToken()))
		}
		if req != nil && req.ReturnPartialSuccess != nil {
			params.Add("returnPartialSuccess", fmt.Sprintf("%v", req.GetReturnPartialSuccess()))
		}
		if req != nil && req.ServiceProjectNumber != nil {
			params.Add("serviceProjectNumber", fmt.Sprintf("%v", req.GetServiceProjectNumber()))
		}

		baseUrl.RawQuery = params.Encode()

		// Build HTTP headers from client and context metadata.
		hds := append(c.xGoogHeaders, "Content-Type", "application/json")
		headers := gax.BuildHeaders(ctx, hds...)
		e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			if settings.Path != "" {
				baseUrl.Path = settings.Path
			}
			httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
			if err != nil {
				return err
			}
			httpReq.Header = headers

			buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "AggregatedList")
			if err != nil {
				return err
			}
			if err := unm.Unmarshal(buf, resp); err != nil {
				return err
			}

			return nil
		}, opts...)
		if e != nil {
			return nil, "", e
		}
		it.Response = resp

		elems := make([]BackendServicesScopedListPair, 0, len(resp.GetItems()))
		for k, v := range resp.GetItems() {
			elems = append(elems, BackendServicesScopedListPair{k, v})
		}
		sort.Slice(elems, func(i, j int) bool { return elems[i].Key < elems[j].Key })

		return elems, resp.GetNextPageToken(), 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.GetMaxResults())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

// Delete deletes the specified BackendService resource.
func (c *backendServicesRESTClient) Delete(ctx context.Context, req *computepb.DeleteBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/Delete")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}")
	}
	opts = append((*c.CallOptions).Delete[0:len((*c.CallOptions).Delete):len((*c.CallOptions).Delete)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("DELETE", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "Delete")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	op := &Operation{
		&globalOperationsHandle{
			c:       c.operationClient,
			proto:   resp,
			project: req.GetProject(),
		},
	}
	return op, nil
}

// DeleteSignedUrlKey deletes a key for validating requests with signed URLs for this backend
// service.
func (c *backendServicesRESTClient) DeleteSignedUrlKey(ctx context.Context, req *computepb.DeleteSignedUrlKeyBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/deleteSignedUrlKey", req.GetProject(), req.GetBackendService())

	params := url.Values{}
	params.Add("keyName", fmt.Sprintf("%v", req.GetKeyName()))
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/DeleteSignedUrlKey")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}/deleteSignedUrlKey")
	}
	opts = append((*c.CallOptions).DeleteSignedUrlKey[0:len((*c.CallOptions).DeleteSignedUrlKey):len((*c.CallOptions).DeleteSignedUrlKey)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "DeleteSignedUrlKey")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	op := &Operation{
		&globalOperationsHandle{
			c:       c.operationClient,
			proto:   resp,
			project: req.GetProject(),
		},
	}
	return op, nil
}

// Get returns the specified BackendService resource.
func (c *backendServicesRESTClient) Get(ctx context.Context, req *computepb.GetBackendServiceRequest, opts ...gax.CallOption) (*computepb.BackendService, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService())

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/Get")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}")
	}
	opts = append((*c.CallOptions).Get[0:len((*c.CallOptions).Get):len((*c.CallOptions).Get)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.BackendService{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "Get")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// GetEffectiveSecurityPolicies returns effective security policies applied to this backend service.
func (c *backendServicesRESTClient) GetEffectiveSecurityPolicies(ctx context.Context, req *computepb.GetEffectiveSecurityPoliciesBackendServiceRequest, opts ...gax.CallOption) (*computepb.BackendServicesGetEffectiveSecurityPoliciesResponse, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/getEffectiveSecurityPolicies", req.GetProject(), req.GetBackendService())

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/GetEffectiveSecurityPolicies")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}/getEffectiveSecurityPolicies")
	}
	opts = append((*c.CallOptions).GetEffectiveSecurityPolicies[0:len((*c.CallOptions).GetEffectiveSecurityPolicies):len((*c.CallOptions).GetEffectiveSecurityPolicies)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.BackendServicesGetEffectiveSecurityPoliciesResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "GetEffectiveSecurityPolicies")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// GetHealth gets the most recent health check results for this
// BackendService.
//
// Example request body:
//
// {
// “group”: “/zones/us-east1-b/instanceGroups/lb-backend-example”
// }
func (c *backendServicesRESTClient) GetHealth(ctx context.Context, req *computepb.GetHealthBackendServiceRequest, opts ...gax.CallOption) (*computepb.BackendServiceGroupHealth, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetResourceGroupReferenceResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/getHealth", req.GetProject(), req.GetBackendService())

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/GetHealth")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}/getHealth")
	}
	opts = append((*c.CallOptions).GetHealth[0:len((*c.CallOptions).GetHealth):len((*c.CallOptions).GetHealth)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.BackendServiceGroupHealth{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "GetHealth")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// GetIamPolicy gets the access control policy for a resource. May be empty if no such
// policy or resource exists.
func (c *backendServicesRESTClient) GetIamPolicy(ctx context.Context, req *computepb.GetIamPolicyBackendServiceRequest, opts ...gax.CallOption) (*computepb.Policy, error) {
	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/getIamPolicy", req.GetProject(), req.GetResource())

	params := url.Values{}
	if req != nil && req.OptionsRequestedPolicyVersion != nil {
		params.Add("optionsRequestedPolicyVersion", fmt.Sprintf("%v", req.GetOptionsRequestedPolicyVersion()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetResource()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/GetIamPolicy")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{resource}/getIamPolicy")
	}
	opts = append((*c.CallOptions).GetIamPolicy[0:len((*c.CallOptions).GetIamPolicy):len((*c.CallOptions).GetIamPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Policy{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "GetIamPolicy")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// Insert creates a BackendService resource in the specified project using
// the data included in the request. For more information, see
// Backend services overview.
func (c *backendServicesRESTClient) Insert(ctx context.Context, req *computepb.InsertBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetBackendServiceResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices", req.GetProject())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "project", url.QueryEscape(req.GetProject()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v", req.GetProject()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/Insert")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices")
	}
	opts = append((*c.CallOptions).Insert[0:len((*c.CallOptions).Insert):len((*c.CallOptions).Insert)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "Insert")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	op := &Operation{
		&globalOperationsHandle{
			c:       c.operationClient,
			proto:   resp,
			project: req.GetProject(),
		},
	}
	return op, nil
}

// List retrieves the list of BackendService resources available to the specified
// project.
func (c *backendServicesRESTClient) List(ctx context.Context, req *computepb.ListBackendServicesRequest, opts ...gax.CallOption) *BackendServiceIterator {
	it := &BackendServiceIterator{}
	req = proto.CloneOf(req)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*computepb.BackendService, string, error) {
		resp := &computepb.BackendServiceList{}
		if pageToken != "" {
			req.PageToken = proto.String(pageToken)
		}
		if pageSize > math.MaxInt32 {
			req.MaxResults = proto.Uint32(uint32(math.MaxInt32))
		} else if pageSize != 0 {
			req.MaxResults = proto.Uint32(uint32(pageSize))
		}
		baseUrl, err := url.Parse(c.endpoint)
		if err != nil {
			return nil, "", err
		}
		baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices", req.GetProject())

		params := url.Values{}
		if req != nil && req.Filter != nil {
			params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
		}
		if req != nil && req.MaxResults != nil {
			params.Add("maxResults", fmt.Sprintf("%v", req.GetMaxResults()))
		}
		if req != nil && req.OrderBy != nil {
			params.Add("orderBy", fmt.Sprintf("%v", req.GetOrderBy()))
		}
		if req != nil && req.PageToken != nil {
			params.Add("pageToken", fmt.Sprintf("%v", req.GetPageToken()))
		}
		if req != nil && req.ReturnPartialSuccess != nil {
			params.Add("returnPartialSuccess", fmt.Sprintf("%v", req.GetReturnPartialSuccess()))
		}

		baseUrl.RawQuery = params.Encode()

		// Build HTTP headers from client and context metadata.
		hds := append(c.xGoogHeaders, "Content-Type", "application/json")
		headers := gax.BuildHeaders(ctx, hds...)
		e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			if settings.Path != "" {
				baseUrl.Path = settings.Path
			}
			httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
			if err != nil {
				return err
			}
			httpReq.Header = headers

			buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "List")
			if err != nil {
				return err
			}
			if err := unm.Unmarshal(buf, resp); err != nil {
				return err
			}

			return nil
		}, opts...)
		if e != nil {
			return nil, "", e
		}
		it.Response = resp
		return resp.GetItems(), resp.GetNextPageToken(), 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.GetMaxResults())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

// ListUsable retrieves a list of all usable backend services in the specified project.
func (c *backendServicesRESTClient) ListUsable(ctx context.Context, req *computepb.ListUsableBackendServicesRequest, opts ...gax.CallOption) *BackendServiceIterator {
	it := &BackendServiceIterator{}
	req = proto.CloneOf(req)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*computepb.BackendService, string, error) {
		resp := &computepb.BackendServiceListUsable{}
		if pageToken != "" {
			req.PageToken = proto.String(pageToken)
		}
		if pageSize > math.MaxInt32 {
			req.MaxResults = proto.Uint32(uint32(math.MaxInt32))
		} else if pageSize != 0 {
			req.MaxResults = proto.Uint32(uint32(pageSize))
		}
		baseUrl, err := url.Parse(c.endpoint)
		if err != nil {
			return nil, "", err
		}
		baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/listUsable", req.GetProject())

		params := url.Values{}
		if req != nil && req.Filter != nil {
			params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
		}
		if req != nil && req.MaxResults != nil {
			params.Add("maxResults", fmt.Sprintf("%v", req.GetMaxResults()))
		}
		if req != nil && req.OrderBy != nil {
			params.Add("orderBy", fmt.Sprintf("%v", req.GetOrderBy()))
		}
		if req != nil && req.PageToken != nil {
			params.Add("pageToken", fmt.Sprintf("%v", req.GetPageToken()))
		}
		if req != nil && req.ReturnPartialSuccess != nil {
			params.Add("returnPartialSuccess", fmt.Sprintf("%v", req.GetReturnPartialSuccess()))
		}

		baseUrl.RawQuery = params.Encode()

		// Build HTTP headers from client and context metadata.
		hds := append(c.xGoogHeaders, "Content-Type", "application/json")
		headers := gax.BuildHeaders(ctx, hds...)
		e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			if settings.Path != "" {
				baseUrl.Path = settings.Path
			}
			httpReq, err := http.NewRequest("GET", baseUrl.String(), nil)
			if err != nil {
				return err
			}
			httpReq.Header = headers

			buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, nil, "ListUsable")
			if err != nil {
				return err
			}
			if err := unm.Unmarshal(buf, resp); err != nil {
				return err
			}

			return nil
		}, opts...)
		if e != nil {
			return nil, "", e
		}
		it.Response = resp
		return resp.GetItems(), resp.GetNextPageToken(), 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.GetMaxResults())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

// Patch patches the specified BackendService resource with the data included in the
// request. For more information, see
// Backend services overview. This method
// supports PATCH semantics and uses the JSON merge
// patch format and processing rules.
func (c *backendServicesRESTClient) Patch(ctx context.Context, req *computepb.PatchBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetBackendServiceResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/Patch")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}")
	}
	opts = append((*c.CallOptions).Patch[0:len((*c.CallOptions).Patch):len((*c.CallOptions).Patch)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("PATCH", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "Patch")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	op := &Operation{
		&globalOperationsHandle{
			c:       c.operationClient,
			proto:   resp,
			project: req.GetProject(),
		},
	}
	return op, nil
}

// SetEdgeSecurityPolicy sets the edge security policy for the specified backend service.
func (c *backendServicesRESTClient) SetEdgeSecurityPolicy(ctx context.Context, req *computepb.SetEdgeSecurityPolicyBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetSecurityPolicyReferenceResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/setEdgeSecurityPolicy", req.GetProject(), req.GetBackendService())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/SetEdgeSecurityPolicy")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}/setEdgeSecurityPolicy")
	}
	opts = append((*c.CallOptions).SetEdgeSecurityPolicy[0:len((*c.CallOptions).SetEdgeSecurityPolicy):len((*c.CallOptions).SetEdgeSecurityPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "SetEdgeSecurityPolicy")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	op := &Operation{
		&globalOperationsHandle{
			c:       c.operationClient,
			proto:   resp,
			project: req.GetProject(),
		},
	}
	return op, nil
}

// SetIamPolicy sets the access control policy on the specified resource.
// Replaces any existing policy.
func (c *backendServicesRESTClient) SetIamPolicy(ctx context.Context, req *computepb.SetIamPolicyBackendServiceRequest, opts ...gax.CallOption) (*computepb.Policy, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetGlobalSetPolicyRequestResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/setIamPolicy", req.GetProject(), req.GetResource())

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetResource()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/SetIamPolicy")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{resource}/setIamPolicy")
	}
	opts = append((*c.CallOptions).SetIamPolicy[0:len((*c.CallOptions).SetIamPolicy):len((*c.CallOptions).SetIamPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Policy{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "SetIamPolicy")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// SetSecurityPolicy sets the Google Cloud Armor security policy for the specified backend
// service. For more information, seeGoogle
// Cloud Armor Overview
func (c *backendServicesRESTClient) SetSecurityPolicy(ctx context.Context, req *computepb.SetSecurityPolicyBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetSecurityPolicyReferenceResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/setSecurityPolicy", req.GetProject(), req.GetBackendService())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/SetSecurityPolicy")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}/setSecurityPolicy")
	}
	opts = append((*c.CallOptions).SetSecurityPolicy[0:len((*c.CallOptions).SetSecurityPolicy):len((*c.CallOptions).SetSecurityPolicy)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "SetSecurityPolicy")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	op := &Operation{
		&globalOperationsHandle{
			c:       c.operationClient,
			proto:   resp,
			project: req.GetProject(),
		},
	}
	return op, nil
}

// TestIamPermissions returns permissions that a caller has on the specified resource.
func (c *backendServicesRESTClient) TestIamPermissions(ctx context.Context, req *computepb.TestIamPermissionsBackendServiceRequest, opts ...gax.CallOption) (*computepb.TestPermissionsResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetTestPermissionsRequestResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v/testIamPermissions", req.GetProject(), req.GetResource())

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetResource()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/TestIamPermissions")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{resource}/testIamPermissions")
	}
	opts = append((*c.CallOptions).TestIamPermissions[0:len((*c.CallOptions).TestIamPermissions):len((*c.CallOptions).TestIamPermissions)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.TestPermissionsResponse{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "TestIamPermissions")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	return resp, nil
}

// Update updates the specified BackendService resource with the data included in the
// request. For more information, seeBackend
// services overview.
func (c *backendServicesRESTClient) Update(ctx context.Context, req *computepb.UpdateBackendServiceRequest, opts ...gax.CallOption) (*Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true}
	body := req.GetBackendServiceResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, err := url.Parse(c.endpoint)
	if err != nil {
		return nil, err
	}
	baseUrl.Path += fmt.Sprintf("/compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	// Build HTTP headers from client and context metadata.
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v&%s=%v", "project", url.QueryEscape(req.GetProject()), "backend_service", url.QueryEscape(req.GetBackendService()))}

	hds = append(c.xGoogHeaders, hds...)
	hds = append(hds, "Content-Type", "application/json")
	headers := gax.BuildHeaders(ctx, hds...)
	if gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "resource_name", fmt.Sprintf("//compute.googleapis.com//compute/beta/projects/%v/global/backendServices/%v", req.GetProject(), req.GetBackendService()))
	}
	if gax.IsFeatureEnabled("METRICS") || gax.IsFeatureEnabled("TRACING") || gax.IsFeatureEnabled("LOGGING") {
		ctx = callctx.WithTelemetryContext(ctx, "rpc_method", "google.cloud.compute.v1beta.BackendServices/Update")
		ctx = callctx.WithTelemetryContext(ctx, "url_template", "/compute/beta/projects/{project}/global/backendServices/{backend_service}")
	}
	opts = append((*c.CallOptions).Update[0:len((*c.CallOptions).Update):len((*c.CallOptions).Update)], opts...)
	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	resp := &computepb.Operation{}
	e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		if settings.Path != "" {
			baseUrl.Path = settings.Path
		}
		httpReq, err := http.NewRequest("PUT", baseUrl.String(), bytes.NewReader(jsonReq))
		if err != nil {
			return err
		}
		httpReq = httpReq.WithContext(ctx)
		httpReq.Header = headers

		buf, err := executeHTTPRequest(ctx, c.httpClient, httpReq, c.logger, jsonReq, "Update")
		if err != nil {
			return err
		}

		if err := unm.Unmarshal(buf, resp); err != nil {
			return err
		}

		return nil
	}, opts...)
	if e != nil {
		return nil, e
	}
	op := &Operation{
		&globalOperationsHandle{
			c:       c.operationClient,
			proto:   resp,
			project: req.GetProject(),
		},
	}
	return op, nil
}
