// Copyright 2022 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 certificatemanager

import (
	"context"
	"fmt"
	"math"
	"net/url"
	"time"

	"cloud.google.com/go/longrunning"
	lroauto "cloud.google.com/go/longrunning/autogen"
	gax "github.com/googleapis/gax-go/v2"
	"google.golang.org/api/iterator"
	"google.golang.org/api/option"
	"google.golang.org/api/option/internaloption"
	gtransport "google.golang.org/api/transport/grpc"
	certificatemanagerpb "google.golang.org/genproto/googleapis/cloud/certificatemanager/v1"
	longrunningpb "google.golang.org/genproto/googleapis/longrunning"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/proto"
)

var newClientHook clientHook

// CallOptions contains the retry settings for each method of Client.
type CallOptions struct {
	ListCertificates          []gax.CallOption
	GetCertificate            []gax.CallOption
	CreateCertificate         []gax.CallOption
	UpdateCertificate         []gax.CallOption
	DeleteCertificate         []gax.CallOption
	ListCertificateMaps       []gax.CallOption
	GetCertificateMap         []gax.CallOption
	CreateCertificateMap      []gax.CallOption
	UpdateCertificateMap      []gax.CallOption
	DeleteCertificateMap      []gax.CallOption
	ListCertificateMapEntries []gax.CallOption
	GetCertificateMapEntry    []gax.CallOption
	CreateCertificateMapEntry []gax.CallOption
	UpdateCertificateMapEntry []gax.CallOption
	DeleteCertificateMapEntry []gax.CallOption
	ListDnsAuthorizations     []gax.CallOption
	GetDnsAuthorization       []gax.CallOption
	CreateDnsAuthorization    []gax.CallOption
	UpdateDnsAuthorization    []gax.CallOption
	DeleteDnsAuthorization    []gax.CallOption
}

func defaultGRPCClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("certificatemanager.googleapis.com:443"),
		internaloption.WithDefaultMTLSEndpoint("certificatemanager.mtls.googleapis.com:443"),
		internaloption.WithDefaultAudience("https://certificatemanager.googleapis.com/"),
		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
		internaloption.EnableJwtWithScope(),
		option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
			grpc.MaxCallRecvMsgSize(math.MaxInt32))),
	}
}

func defaultCallOptions() *CallOptions {
	return &CallOptions{
		ListCertificates: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetCertificate: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CreateCertificate: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		UpdateCertificate: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		DeleteCertificate: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		ListCertificateMaps: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetCertificateMap: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CreateCertificateMap: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		UpdateCertificateMap: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		DeleteCertificateMap: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		ListCertificateMapEntries: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetCertificateMapEntry: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CreateCertificateMapEntry: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		UpdateCertificateMapEntry: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		DeleteCertificateMapEntry: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		ListDnsAuthorizations: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		GetDnsAuthorization: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		CreateDnsAuthorization: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		UpdateDnsAuthorization: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
		DeleteDnsAuthorization: []gax.CallOption{
			gax.WithRetry(func() gax.Retryer {
				return gax.OnCodes([]codes.Code{
					codes.Unavailable,
				}, gax.Backoff{
					Initial:    1000 * time.Millisecond,
					Max:        10000 * time.Millisecond,
					Multiplier: 1.30,
				})
			}),
		},
	}
}

// internalClient is an interface that defines the methods availaible from Certificate Manager API.
type internalClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	ListCertificates(context.Context, *certificatemanagerpb.ListCertificatesRequest, ...gax.CallOption) *CertificateIterator
	GetCertificate(context.Context, *certificatemanagerpb.GetCertificateRequest, ...gax.CallOption) (*certificatemanagerpb.Certificate, error)
	CreateCertificate(context.Context, *certificatemanagerpb.CreateCertificateRequest, ...gax.CallOption) (*CreateCertificateOperation, error)
	CreateCertificateOperation(name string) *CreateCertificateOperation
	UpdateCertificate(context.Context, *certificatemanagerpb.UpdateCertificateRequest, ...gax.CallOption) (*UpdateCertificateOperation, error)
	UpdateCertificateOperation(name string) *UpdateCertificateOperation
	DeleteCertificate(context.Context, *certificatemanagerpb.DeleteCertificateRequest, ...gax.CallOption) (*DeleteCertificateOperation, error)
	DeleteCertificateOperation(name string) *DeleteCertificateOperation
	ListCertificateMaps(context.Context, *certificatemanagerpb.ListCertificateMapsRequest, ...gax.CallOption) *CertificateMapIterator
	GetCertificateMap(context.Context, *certificatemanagerpb.GetCertificateMapRequest, ...gax.CallOption) (*certificatemanagerpb.CertificateMap, error)
	CreateCertificateMap(context.Context, *certificatemanagerpb.CreateCertificateMapRequest, ...gax.CallOption) (*CreateCertificateMapOperation, error)
	CreateCertificateMapOperation(name string) *CreateCertificateMapOperation
	UpdateCertificateMap(context.Context, *certificatemanagerpb.UpdateCertificateMapRequest, ...gax.CallOption) (*UpdateCertificateMapOperation, error)
	UpdateCertificateMapOperation(name string) *UpdateCertificateMapOperation
	DeleteCertificateMap(context.Context, *certificatemanagerpb.DeleteCertificateMapRequest, ...gax.CallOption) (*DeleteCertificateMapOperation, error)
	DeleteCertificateMapOperation(name string) *DeleteCertificateMapOperation
	ListCertificateMapEntries(context.Context, *certificatemanagerpb.ListCertificateMapEntriesRequest, ...gax.CallOption) *CertificateMapEntryIterator
	GetCertificateMapEntry(context.Context, *certificatemanagerpb.GetCertificateMapEntryRequest, ...gax.CallOption) (*certificatemanagerpb.CertificateMapEntry, error)
	CreateCertificateMapEntry(context.Context, *certificatemanagerpb.CreateCertificateMapEntryRequest, ...gax.CallOption) (*CreateCertificateMapEntryOperation, error)
	CreateCertificateMapEntryOperation(name string) *CreateCertificateMapEntryOperation
	UpdateCertificateMapEntry(context.Context, *certificatemanagerpb.UpdateCertificateMapEntryRequest, ...gax.CallOption) (*UpdateCertificateMapEntryOperation, error)
	UpdateCertificateMapEntryOperation(name string) *UpdateCertificateMapEntryOperation
	DeleteCertificateMapEntry(context.Context, *certificatemanagerpb.DeleteCertificateMapEntryRequest, ...gax.CallOption) (*DeleteCertificateMapEntryOperation, error)
	DeleteCertificateMapEntryOperation(name string) *DeleteCertificateMapEntryOperation
	ListDnsAuthorizations(context.Context, *certificatemanagerpb.ListDnsAuthorizationsRequest, ...gax.CallOption) *DnsAuthorizationIterator
	GetDnsAuthorization(context.Context, *certificatemanagerpb.GetDnsAuthorizationRequest, ...gax.CallOption) (*certificatemanagerpb.DnsAuthorization, error)
	CreateDnsAuthorization(context.Context, *certificatemanagerpb.CreateDnsAuthorizationRequest, ...gax.CallOption) (*CreateDnsAuthorizationOperation, error)
	CreateDnsAuthorizationOperation(name string) *CreateDnsAuthorizationOperation
	UpdateDnsAuthorization(context.Context, *certificatemanagerpb.UpdateDnsAuthorizationRequest, ...gax.CallOption) (*UpdateDnsAuthorizationOperation, error)
	UpdateDnsAuthorizationOperation(name string) *UpdateDnsAuthorizationOperation
	DeleteDnsAuthorization(context.Context, *certificatemanagerpb.DeleteDnsAuthorizationRequest, ...gax.CallOption) (*DeleteDnsAuthorizationOperation, error)
	DeleteDnsAuthorizationOperation(name string) *DeleteDnsAuthorizationOperation
}

// Client is a client for interacting with Certificate Manager API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// API Overview
//
// Certificates Manager API allows customers to see and manage all their TLS
// certificates.
//
// Certificates Manager API service provides methods to manage certificates,
// group them into collections, and create serving configuration that can be
// easily applied to other Cloud resources e.g. Target Proxies.
//
// Data Model
//
// The Certificates Manager service exposes the following resources:
//
//   Certificate which describes a single TLS certificate.
//
//   CertificateMap which describes a collection of certificates that can be
//   attached to a target resource.
//
//   CertificateMapEntry which describes a single configuration entry that
//   consists of a SNI and a group of certificates. It’s a subresource of
//   CertificateMap.
//
// Certificate, CertificateMap and CertificateMapEntry IDs
// have to match “^[a-z0-9-]{1,63}$” regexp, which means that
//
//   only lower case letters, digits, and hyphen are allowed
//
//   length of the resource ID has to be in [1,63] range.
//
// Provides methods to manage Cloud Certificate Manager entities.
type Client struct {
	// The internal transport-dependent client.
	internalClient internalClient

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

	// LROClient is used internally to handle long-running operations.
	// It is exposed so that its CallOptions can be modified if required.
	// Users should not Close this client.
	LROClient *lroauto.OperationsClient
}

// 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 *Client) 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 *Client) setGoogleClientInfo(keyval ...string) {
	c.internalClient.setGoogleClientInfo(keyval...)
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *Client) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// ListCertificates lists Certificates in a given project and location.
func (c *Client) ListCertificates(ctx context.Context, req *certificatemanagerpb.ListCertificatesRequest, opts ...gax.CallOption) *CertificateIterator {
	return c.internalClient.ListCertificates(ctx, req, opts...)
}

// GetCertificate gets details of a single Certificate.
func (c *Client) GetCertificate(ctx context.Context, req *certificatemanagerpb.GetCertificateRequest, opts ...gax.CallOption) (*certificatemanagerpb.Certificate, error) {
	return c.internalClient.GetCertificate(ctx, req, opts...)
}

// CreateCertificate creates a new Certificate in a given project and location.
func (c *Client) CreateCertificate(ctx context.Context, req *certificatemanagerpb.CreateCertificateRequest, opts ...gax.CallOption) (*CreateCertificateOperation, error) {
	return c.internalClient.CreateCertificate(ctx, req, opts...)
}

// CreateCertificateOperation returns a new CreateCertificateOperation from a given name.
// The name must be that of a previously created CreateCertificateOperation, possibly from a different process.
func (c *Client) CreateCertificateOperation(name string) *CreateCertificateOperation {
	return c.internalClient.CreateCertificateOperation(name)
}

// UpdateCertificate updates a Certificate.
func (c *Client) UpdateCertificate(ctx context.Context, req *certificatemanagerpb.UpdateCertificateRequest, opts ...gax.CallOption) (*UpdateCertificateOperation, error) {
	return c.internalClient.UpdateCertificate(ctx, req, opts...)
}

// UpdateCertificateOperation returns a new UpdateCertificateOperation from a given name.
// The name must be that of a previously created UpdateCertificateOperation, possibly from a different process.
func (c *Client) UpdateCertificateOperation(name string) *UpdateCertificateOperation {
	return c.internalClient.UpdateCertificateOperation(name)
}

// DeleteCertificate deletes a single Certificate.
func (c *Client) DeleteCertificate(ctx context.Context, req *certificatemanagerpb.DeleteCertificateRequest, opts ...gax.CallOption) (*DeleteCertificateOperation, error) {
	return c.internalClient.DeleteCertificate(ctx, req, opts...)
}

// DeleteCertificateOperation returns a new DeleteCertificateOperation from a given name.
// The name must be that of a previously created DeleteCertificateOperation, possibly from a different process.
func (c *Client) DeleteCertificateOperation(name string) *DeleteCertificateOperation {
	return c.internalClient.DeleteCertificateOperation(name)
}

// ListCertificateMaps lists CertificateMaps in a given project and location.
func (c *Client) ListCertificateMaps(ctx context.Context, req *certificatemanagerpb.ListCertificateMapsRequest, opts ...gax.CallOption) *CertificateMapIterator {
	return c.internalClient.ListCertificateMaps(ctx, req, opts...)
}

// GetCertificateMap gets details of a single CertificateMap.
func (c *Client) GetCertificateMap(ctx context.Context, req *certificatemanagerpb.GetCertificateMapRequest, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMap, error) {
	return c.internalClient.GetCertificateMap(ctx, req, opts...)
}

// CreateCertificateMap creates a new CertificateMap in a given project and location.
func (c *Client) CreateCertificateMap(ctx context.Context, req *certificatemanagerpb.CreateCertificateMapRequest, opts ...gax.CallOption) (*CreateCertificateMapOperation, error) {
	return c.internalClient.CreateCertificateMap(ctx, req, opts...)
}

// CreateCertificateMapOperation returns a new CreateCertificateMapOperation from a given name.
// The name must be that of a previously created CreateCertificateMapOperation, possibly from a different process.
func (c *Client) CreateCertificateMapOperation(name string) *CreateCertificateMapOperation {
	return c.internalClient.CreateCertificateMapOperation(name)
}

// UpdateCertificateMap updates a CertificateMap.
func (c *Client) UpdateCertificateMap(ctx context.Context, req *certificatemanagerpb.UpdateCertificateMapRequest, opts ...gax.CallOption) (*UpdateCertificateMapOperation, error) {
	return c.internalClient.UpdateCertificateMap(ctx, req, opts...)
}

// UpdateCertificateMapOperation returns a new UpdateCertificateMapOperation from a given name.
// The name must be that of a previously created UpdateCertificateMapOperation, possibly from a different process.
func (c *Client) UpdateCertificateMapOperation(name string) *UpdateCertificateMapOperation {
	return c.internalClient.UpdateCertificateMapOperation(name)
}

// DeleteCertificateMap deletes a single CertificateMap. A Certificate Map can’t be deleted
// if it contains Certificate Map Entries. Remove all the entries from
// the map before calling this method.
func (c *Client) DeleteCertificateMap(ctx context.Context, req *certificatemanagerpb.DeleteCertificateMapRequest, opts ...gax.CallOption) (*DeleteCertificateMapOperation, error) {
	return c.internalClient.DeleteCertificateMap(ctx, req, opts...)
}

// DeleteCertificateMapOperation returns a new DeleteCertificateMapOperation from a given name.
// The name must be that of a previously created DeleteCertificateMapOperation, possibly from a different process.
func (c *Client) DeleteCertificateMapOperation(name string) *DeleteCertificateMapOperation {
	return c.internalClient.DeleteCertificateMapOperation(name)
}

// ListCertificateMapEntries lists CertificateMapEntries in a given project and location.
func (c *Client) ListCertificateMapEntries(ctx context.Context, req *certificatemanagerpb.ListCertificateMapEntriesRequest, opts ...gax.CallOption) *CertificateMapEntryIterator {
	return c.internalClient.ListCertificateMapEntries(ctx, req, opts...)
}

// GetCertificateMapEntry gets details of a single CertificateMapEntry.
func (c *Client) GetCertificateMapEntry(ctx context.Context, req *certificatemanagerpb.GetCertificateMapEntryRequest, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMapEntry, error) {
	return c.internalClient.GetCertificateMapEntry(ctx, req, opts...)
}

// CreateCertificateMapEntry creates a new CertificateMapEntry in a given project and location.
func (c *Client) CreateCertificateMapEntry(ctx context.Context, req *certificatemanagerpb.CreateCertificateMapEntryRequest, opts ...gax.CallOption) (*CreateCertificateMapEntryOperation, error) {
	return c.internalClient.CreateCertificateMapEntry(ctx, req, opts...)
}

// CreateCertificateMapEntryOperation returns a new CreateCertificateMapEntryOperation from a given name.
// The name must be that of a previously created CreateCertificateMapEntryOperation, possibly from a different process.
func (c *Client) CreateCertificateMapEntryOperation(name string) *CreateCertificateMapEntryOperation {
	return c.internalClient.CreateCertificateMapEntryOperation(name)
}

// UpdateCertificateMapEntry updates a CertificateMapEntry.
func (c *Client) UpdateCertificateMapEntry(ctx context.Context, req *certificatemanagerpb.UpdateCertificateMapEntryRequest, opts ...gax.CallOption) (*UpdateCertificateMapEntryOperation, error) {
	return c.internalClient.UpdateCertificateMapEntry(ctx, req, opts...)
}

// UpdateCertificateMapEntryOperation returns a new UpdateCertificateMapEntryOperation from a given name.
// The name must be that of a previously created UpdateCertificateMapEntryOperation, possibly from a different process.
func (c *Client) UpdateCertificateMapEntryOperation(name string) *UpdateCertificateMapEntryOperation {
	return c.internalClient.UpdateCertificateMapEntryOperation(name)
}

// DeleteCertificateMapEntry deletes a single CertificateMapEntry.
func (c *Client) DeleteCertificateMapEntry(ctx context.Context, req *certificatemanagerpb.DeleteCertificateMapEntryRequest, opts ...gax.CallOption) (*DeleteCertificateMapEntryOperation, error) {
	return c.internalClient.DeleteCertificateMapEntry(ctx, req, opts...)
}

// DeleteCertificateMapEntryOperation returns a new DeleteCertificateMapEntryOperation from a given name.
// The name must be that of a previously created DeleteCertificateMapEntryOperation, possibly from a different process.
func (c *Client) DeleteCertificateMapEntryOperation(name string) *DeleteCertificateMapEntryOperation {
	return c.internalClient.DeleteCertificateMapEntryOperation(name)
}

// ListDnsAuthorizations lists DnsAuthorizations in a given project and location.
func (c *Client) ListDnsAuthorizations(ctx context.Context, req *certificatemanagerpb.ListDnsAuthorizationsRequest, opts ...gax.CallOption) *DnsAuthorizationIterator {
	return c.internalClient.ListDnsAuthorizations(ctx, req, opts...)
}

// GetDnsAuthorization gets details of a single DnsAuthorization.
func (c *Client) GetDnsAuthorization(ctx context.Context, req *certificatemanagerpb.GetDnsAuthorizationRequest, opts ...gax.CallOption) (*certificatemanagerpb.DnsAuthorization, error) {
	return c.internalClient.GetDnsAuthorization(ctx, req, opts...)
}

// CreateDnsAuthorization creates a new DnsAuthorization in a given project and location.
func (c *Client) CreateDnsAuthorization(ctx context.Context, req *certificatemanagerpb.CreateDnsAuthorizationRequest, opts ...gax.CallOption) (*CreateDnsAuthorizationOperation, error) {
	return c.internalClient.CreateDnsAuthorization(ctx, req, opts...)
}

// CreateDnsAuthorizationOperation returns a new CreateDnsAuthorizationOperation from a given name.
// The name must be that of a previously created CreateDnsAuthorizationOperation, possibly from a different process.
func (c *Client) CreateDnsAuthorizationOperation(name string) *CreateDnsAuthorizationOperation {
	return c.internalClient.CreateDnsAuthorizationOperation(name)
}

// UpdateDnsAuthorization updates a DnsAuthorization.
func (c *Client) UpdateDnsAuthorization(ctx context.Context, req *certificatemanagerpb.UpdateDnsAuthorizationRequest, opts ...gax.CallOption) (*UpdateDnsAuthorizationOperation, error) {
	return c.internalClient.UpdateDnsAuthorization(ctx, req, opts...)
}

// UpdateDnsAuthorizationOperation returns a new UpdateDnsAuthorizationOperation from a given name.
// The name must be that of a previously created UpdateDnsAuthorizationOperation, possibly from a different process.
func (c *Client) UpdateDnsAuthorizationOperation(name string) *UpdateDnsAuthorizationOperation {
	return c.internalClient.UpdateDnsAuthorizationOperation(name)
}

// DeleteDnsAuthorization deletes a single DnsAuthorization.
func (c *Client) DeleteDnsAuthorization(ctx context.Context, req *certificatemanagerpb.DeleteDnsAuthorizationRequest, opts ...gax.CallOption) (*DeleteDnsAuthorizationOperation, error) {
	return c.internalClient.DeleteDnsAuthorization(ctx, req, opts...)
}

// DeleteDnsAuthorizationOperation returns a new DeleteDnsAuthorizationOperation from a given name.
// The name must be that of a previously created DeleteDnsAuthorizationOperation, possibly from a different process.
func (c *Client) DeleteDnsAuthorizationOperation(name string) *DeleteDnsAuthorizationOperation {
	return c.internalClient.DeleteDnsAuthorizationOperation(name)
}

// gRPCClient is a client for interacting with Certificate Manager API over gRPC transport.
//
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type gRPCClient struct {
	// Connection pool of gRPC connections to the service.
	connPool gtransport.ConnPool

	// flag to opt out of default deadlines via GOOGLE_API_GO_EXPERIMENTAL_DISABLE_DEFAULT_DEADLINE
	disableDeadlines bool

	// Points back to the CallOptions field of the containing Client
	CallOptions **CallOptions

	// The gRPC API client.
	client certificatemanagerpb.CertificateManagerClient

	// LROClient is used internally to handle long-running operations.
	// It is exposed so that its CallOptions can be modified if required.
	// Users should not Close this client.
	LROClient **lroauto.OperationsClient

	// The x-goog-* metadata to be sent with each request.
	xGoogMetadata metadata.MD
}

// NewClient creates a new certificate manager client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// API Overview
//
// Certificates Manager API allows customers to see and manage all their TLS
// certificates.
//
// Certificates Manager API service provides methods to manage certificates,
// group them into collections, and create serving configuration that can be
// easily applied to other Cloud resources e.g. Target Proxies.
//
// Data Model
//
// The Certificates Manager service exposes the following resources:
//
//   Certificate which describes a single TLS certificate.
//
//   CertificateMap which describes a collection of certificates that can be
//   attached to a target resource.
//
//   CertificateMapEntry which describes a single configuration entry that
//   consists of a SNI and a group of certificates. It’s a subresource of
//   CertificateMap.
//
// Certificate, CertificateMap and CertificateMapEntry IDs
// have to match “^[a-z0-9-]{1,63}$” regexp, which means that
//
//   only lower case letters, digits, and hyphen are allowed
//
//   length of the resource ID has to be in [1,63] range.
//
// Provides methods to manage Cloud Certificate Manager entities.
func NewClient(ctx context.Context, opts ...option.ClientOption) (*Client, error) {
	clientOpts := defaultGRPCClientOptions()
	if newClientHook != nil {
		hookOpts, err := newClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

	disableDeadlines, err := checkDisableDeadlines()
	if err != nil {
		return nil, err
	}

	connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...)
	if err != nil {
		return nil, err
	}
	client := Client{CallOptions: defaultCallOptions()}

	c := &gRPCClient{
		connPool:         connPool,
		disableDeadlines: disableDeadlines,
		client:           certificatemanagerpb.NewCertificateManagerClient(connPool),
		CallOptions:      &client.CallOptions,
	}
	c.setGoogleClientInfo()

	client.internalClient = c

	client.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
	}
	c.LROClient = &client.LROClient
	return &client, nil
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *gRPCClient) Connection() *grpc.ClientConn {
	return c.connPool.Conn()
}

// 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 *gRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", versionGo()}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogMetadata = metadata.Pairs("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 *gRPCClient) Close() error {
	return c.connPool.Close()
}

func (c *gRPCClient) ListCertificates(ctx context.Context, req *certificatemanagerpb.ListCertificatesRequest, opts ...gax.CallOption) *CertificateIterator {
	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).ListCertificates[0:len((*c.CallOptions).ListCertificates):len((*c.CallOptions).ListCertificates)], opts...)
	it := &CertificateIterator{}
	req = proto.Clone(req).(*certificatemanagerpb.ListCertificatesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*certificatemanagerpb.Certificate, string, error) {
		resp := &certificatemanagerpb.ListCertificatesResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.client.ListCertificates(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetCertificates(), 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.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

func (c *gRPCClient) GetCertificate(ctx context.Context, req *certificatemanagerpb.GetCertificateRequest, opts ...gax.CallOption) (*certificatemanagerpb.Certificate, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).GetCertificate[0:len((*c.CallOptions).GetCertificate):len((*c.CallOptions).GetCertificate)], opts...)
	var resp *certificatemanagerpb.Certificate
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.GetCertificate(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *gRPCClient) CreateCertificate(ctx context.Context, req *certificatemanagerpb.CreateCertificateRequest, opts ...gax.CallOption) (*CreateCertificateOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).CreateCertificate[0:len((*c.CallOptions).CreateCertificate):len((*c.CallOptions).CreateCertificate)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.CreateCertificate(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateCertificateOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) UpdateCertificate(ctx context.Context, req *certificatemanagerpb.UpdateCertificateRequest, opts ...gax.CallOption) (*UpdateCertificateOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "certificate.name", url.QueryEscape(req.GetCertificate().GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateCertificate[0:len((*c.CallOptions).UpdateCertificate):len((*c.CallOptions).UpdateCertificate)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.UpdateCertificate(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UpdateCertificateOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) DeleteCertificate(ctx context.Context, req *certificatemanagerpb.DeleteCertificateRequest, opts ...gax.CallOption) (*DeleteCertificateOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).DeleteCertificate[0:len((*c.CallOptions).DeleteCertificate):len((*c.CallOptions).DeleteCertificate)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.DeleteCertificate(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteCertificateOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) ListCertificateMaps(ctx context.Context, req *certificatemanagerpb.ListCertificateMapsRequest, opts ...gax.CallOption) *CertificateMapIterator {
	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).ListCertificateMaps[0:len((*c.CallOptions).ListCertificateMaps):len((*c.CallOptions).ListCertificateMaps)], opts...)
	it := &CertificateMapIterator{}
	req = proto.Clone(req).(*certificatemanagerpb.ListCertificateMapsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*certificatemanagerpb.CertificateMap, string, error) {
		resp := &certificatemanagerpb.ListCertificateMapsResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.client.ListCertificateMaps(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetCertificateMaps(), 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.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

func (c *gRPCClient) GetCertificateMap(ctx context.Context, req *certificatemanagerpb.GetCertificateMapRequest, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMap, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).GetCertificateMap[0:len((*c.CallOptions).GetCertificateMap):len((*c.CallOptions).GetCertificateMap)], opts...)
	var resp *certificatemanagerpb.CertificateMap
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.GetCertificateMap(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *gRPCClient) CreateCertificateMap(ctx context.Context, req *certificatemanagerpb.CreateCertificateMapRequest, opts ...gax.CallOption) (*CreateCertificateMapOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).CreateCertificateMap[0:len((*c.CallOptions).CreateCertificateMap):len((*c.CallOptions).CreateCertificateMap)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.CreateCertificateMap(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateCertificateMapOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) UpdateCertificateMap(ctx context.Context, req *certificatemanagerpb.UpdateCertificateMapRequest, opts ...gax.CallOption) (*UpdateCertificateMapOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "certificate_map.name", url.QueryEscape(req.GetCertificateMap().GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateCertificateMap[0:len((*c.CallOptions).UpdateCertificateMap):len((*c.CallOptions).UpdateCertificateMap)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.UpdateCertificateMap(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UpdateCertificateMapOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) DeleteCertificateMap(ctx context.Context, req *certificatemanagerpb.DeleteCertificateMapRequest, opts ...gax.CallOption) (*DeleteCertificateMapOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).DeleteCertificateMap[0:len((*c.CallOptions).DeleteCertificateMap):len((*c.CallOptions).DeleteCertificateMap)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.DeleteCertificateMap(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteCertificateMapOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) ListCertificateMapEntries(ctx context.Context, req *certificatemanagerpb.ListCertificateMapEntriesRequest, opts ...gax.CallOption) *CertificateMapEntryIterator {
	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).ListCertificateMapEntries[0:len((*c.CallOptions).ListCertificateMapEntries):len((*c.CallOptions).ListCertificateMapEntries)], opts...)
	it := &CertificateMapEntryIterator{}
	req = proto.Clone(req).(*certificatemanagerpb.ListCertificateMapEntriesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*certificatemanagerpb.CertificateMapEntry, string, error) {
		resp := &certificatemanagerpb.ListCertificateMapEntriesResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.client.ListCertificateMapEntries(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetCertificateMapEntries(), 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.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

func (c *gRPCClient) GetCertificateMapEntry(ctx context.Context, req *certificatemanagerpb.GetCertificateMapEntryRequest, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMapEntry, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).GetCertificateMapEntry[0:len((*c.CallOptions).GetCertificateMapEntry):len((*c.CallOptions).GetCertificateMapEntry)], opts...)
	var resp *certificatemanagerpb.CertificateMapEntry
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.GetCertificateMapEntry(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *gRPCClient) CreateCertificateMapEntry(ctx context.Context, req *certificatemanagerpb.CreateCertificateMapEntryRequest, opts ...gax.CallOption) (*CreateCertificateMapEntryOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).CreateCertificateMapEntry[0:len((*c.CallOptions).CreateCertificateMapEntry):len((*c.CallOptions).CreateCertificateMapEntry)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.CreateCertificateMapEntry(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateCertificateMapEntryOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) UpdateCertificateMapEntry(ctx context.Context, req *certificatemanagerpb.UpdateCertificateMapEntryRequest, opts ...gax.CallOption) (*UpdateCertificateMapEntryOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "certificate_map_entry.name", url.QueryEscape(req.GetCertificateMapEntry().GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateCertificateMapEntry[0:len((*c.CallOptions).UpdateCertificateMapEntry):len((*c.CallOptions).UpdateCertificateMapEntry)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.UpdateCertificateMapEntry(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UpdateCertificateMapEntryOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) DeleteCertificateMapEntry(ctx context.Context, req *certificatemanagerpb.DeleteCertificateMapEntryRequest, opts ...gax.CallOption) (*DeleteCertificateMapEntryOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).DeleteCertificateMapEntry[0:len((*c.CallOptions).DeleteCertificateMapEntry):len((*c.CallOptions).DeleteCertificateMapEntry)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.DeleteCertificateMapEntry(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteCertificateMapEntryOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) ListDnsAuthorizations(ctx context.Context, req *certificatemanagerpb.ListDnsAuthorizationsRequest, opts ...gax.CallOption) *DnsAuthorizationIterator {
	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).ListDnsAuthorizations[0:len((*c.CallOptions).ListDnsAuthorizations):len((*c.CallOptions).ListDnsAuthorizations)], opts...)
	it := &DnsAuthorizationIterator{}
	req = proto.Clone(req).(*certificatemanagerpb.ListDnsAuthorizationsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*certificatemanagerpb.DnsAuthorization, string, error) {
		resp := &certificatemanagerpb.ListDnsAuthorizationsResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.client.ListDnsAuthorizations(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetDnsAuthorizations(), 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.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()

	return it
}

func (c *gRPCClient) GetDnsAuthorization(ctx context.Context, req *certificatemanagerpb.GetDnsAuthorizationRequest, opts ...gax.CallOption) (*certificatemanagerpb.DnsAuthorization, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).GetDnsAuthorization[0:len((*c.CallOptions).GetDnsAuthorization):len((*c.CallOptions).GetDnsAuthorization)], opts...)
	var resp *certificatemanagerpb.DnsAuthorization
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.GetDnsAuthorization(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *gRPCClient) CreateDnsAuthorization(ctx context.Context, req *certificatemanagerpb.CreateDnsAuthorizationRequest, opts ...gax.CallOption) (*CreateDnsAuthorizationOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).CreateDnsAuthorization[0:len((*c.CallOptions).CreateDnsAuthorization):len((*c.CallOptions).CreateDnsAuthorization)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.CreateDnsAuthorization(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateDnsAuthorizationOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) UpdateDnsAuthorization(ctx context.Context, req *certificatemanagerpb.UpdateDnsAuthorizationRequest, opts ...gax.CallOption) (*UpdateDnsAuthorizationOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "dns_authorization.name", url.QueryEscape(req.GetDnsAuthorization().GetName())))

	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((*c.CallOptions).UpdateDnsAuthorization[0:len((*c.CallOptions).UpdateDnsAuthorization):len((*c.CallOptions).UpdateDnsAuthorization)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.UpdateDnsAuthorization(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UpdateDnsAuthorizationOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *gRPCClient) DeleteDnsAuthorization(ctx context.Context, req *certificatemanagerpb.DeleteDnsAuthorizationRequest, opts ...gax.CallOption) (*DeleteDnsAuthorizationOperation, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
		defer cancel()
		ctx = cctx
	}
	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).DeleteDnsAuthorization[0:len((*c.CallOptions).DeleteDnsAuthorization):len((*c.CallOptions).DeleteDnsAuthorization)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.client.DeleteDnsAuthorization(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteDnsAuthorizationOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

// CreateCertificateOperation manages a long-running operation from CreateCertificate.
type CreateCertificateOperation struct {
	lro *longrunning.Operation
}

// CreateCertificateOperation returns a new CreateCertificateOperation from a given name.
// The name must be that of a previously created CreateCertificateOperation, possibly from a different process.
func (c *gRPCClient) CreateCertificateOperation(name string) *CreateCertificateOperation {
	return &CreateCertificateOperation{
		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 *CreateCertificateOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.Certificate, error) {
	var resp certificatemanagerpb.Certificate
	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 *CreateCertificateOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.Certificate, error) {
	var resp certificatemanagerpb.Certificate
	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 *CreateCertificateOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *CreateCertificateOperation) 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 *CreateCertificateOperation) Name() string {
	return op.lro.Name()
}

// CreateCertificateMapOperation manages a long-running operation from CreateCertificateMap.
type CreateCertificateMapOperation struct {
	lro *longrunning.Operation
}

// CreateCertificateMapOperation returns a new CreateCertificateMapOperation from a given name.
// The name must be that of a previously created CreateCertificateMapOperation, possibly from a different process.
func (c *gRPCClient) CreateCertificateMapOperation(name string) *CreateCertificateMapOperation {
	return &CreateCertificateMapOperation{
		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 *CreateCertificateMapOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMap, error) {
	var resp certificatemanagerpb.CertificateMap
	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 *CreateCertificateMapOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMap, error) {
	var resp certificatemanagerpb.CertificateMap
	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 *CreateCertificateMapOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *CreateCertificateMapOperation) 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 *CreateCertificateMapOperation) Name() string {
	return op.lro.Name()
}

// CreateCertificateMapEntryOperation manages a long-running operation from CreateCertificateMapEntry.
type CreateCertificateMapEntryOperation struct {
	lro *longrunning.Operation
}

// CreateCertificateMapEntryOperation returns a new CreateCertificateMapEntryOperation from a given name.
// The name must be that of a previously created CreateCertificateMapEntryOperation, possibly from a different process.
func (c *gRPCClient) CreateCertificateMapEntryOperation(name string) *CreateCertificateMapEntryOperation {
	return &CreateCertificateMapEntryOperation{
		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 *CreateCertificateMapEntryOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMapEntry, error) {
	var resp certificatemanagerpb.CertificateMapEntry
	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 *CreateCertificateMapEntryOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMapEntry, error) {
	var resp certificatemanagerpb.CertificateMapEntry
	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 *CreateCertificateMapEntryOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *CreateCertificateMapEntryOperation) 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 *CreateCertificateMapEntryOperation) Name() string {
	return op.lro.Name()
}

// CreateDnsAuthorizationOperation manages a long-running operation from CreateDnsAuthorization.
type CreateDnsAuthorizationOperation struct {
	lro *longrunning.Operation
}

// CreateDnsAuthorizationOperation returns a new CreateDnsAuthorizationOperation from a given name.
// The name must be that of a previously created CreateDnsAuthorizationOperation, possibly from a different process.
func (c *gRPCClient) CreateDnsAuthorizationOperation(name string) *CreateDnsAuthorizationOperation {
	return &CreateDnsAuthorizationOperation{
		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 *CreateDnsAuthorizationOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.DnsAuthorization, error) {
	var resp certificatemanagerpb.DnsAuthorization
	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 *CreateDnsAuthorizationOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.DnsAuthorization, error) {
	var resp certificatemanagerpb.DnsAuthorization
	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 *CreateDnsAuthorizationOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *CreateDnsAuthorizationOperation) 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 *CreateDnsAuthorizationOperation) Name() string {
	return op.lro.Name()
}

// DeleteCertificateOperation manages a long-running operation from DeleteCertificate.
type DeleteCertificateOperation struct {
	lro *longrunning.Operation
}

// DeleteCertificateOperation returns a new DeleteCertificateOperation from a given name.
// The name must be that of a previously created DeleteCertificateOperation, possibly from a different process.
func (c *gRPCClient) DeleteCertificateOperation(name string) *DeleteCertificateOperation {
	return &DeleteCertificateOperation{
		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 *DeleteCertificateOperation) 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 *DeleteCertificateOperation) 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 *DeleteCertificateOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *DeleteCertificateOperation) 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 *DeleteCertificateOperation) Name() string {
	return op.lro.Name()
}

// DeleteCertificateMapOperation manages a long-running operation from DeleteCertificateMap.
type DeleteCertificateMapOperation struct {
	lro *longrunning.Operation
}

// DeleteCertificateMapOperation returns a new DeleteCertificateMapOperation from a given name.
// The name must be that of a previously created DeleteCertificateMapOperation, possibly from a different process.
func (c *gRPCClient) DeleteCertificateMapOperation(name string) *DeleteCertificateMapOperation {
	return &DeleteCertificateMapOperation{
		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 *DeleteCertificateMapOperation) 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 *DeleteCertificateMapOperation) 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 *DeleteCertificateMapOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *DeleteCertificateMapOperation) 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 *DeleteCertificateMapOperation) Name() string {
	return op.lro.Name()
}

// DeleteCertificateMapEntryOperation manages a long-running operation from DeleteCertificateMapEntry.
type DeleteCertificateMapEntryOperation struct {
	lro *longrunning.Operation
}

// DeleteCertificateMapEntryOperation returns a new DeleteCertificateMapEntryOperation from a given name.
// The name must be that of a previously created DeleteCertificateMapEntryOperation, possibly from a different process.
func (c *gRPCClient) DeleteCertificateMapEntryOperation(name string) *DeleteCertificateMapEntryOperation {
	return &DeleteCertificateMapEntryOperation{
		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 *DeleteCertificateMapEntryOperation) 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 *DeleteCertificateMapEntryOperation) 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 *DeleteCertificateMapEntryOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *DeleteCertificateMapEntryOperation) 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 *DeleteCertificateMapEntryOperation) Name() string {
	return op.lro.Name()
}

// DeleteDnsAuthorizationOperation manages a long-running operation from DeleteDnsAuthorization.
type DeleteDnsAuthorizationOperation struct {
	lro *longrunning.Operation
}

// DeleteDnsAuthorizationOperation returns a new DeleteDnsAuthorizationOperation from a given name.
// The name must be that of a previously created DeleteDnsAuthorizationOperation, possibly from a different process.
func (c *gRPCClient) DeleteDnsAuthorizationOperation(name string) *DeleteDnsAuthorizationOperation {
	return &DeleteDnsAuthorizationOperation{
		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 *DeleteDnsAuthorizationOperation) 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 *DeleteDnsAuthorizationOperation) 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 *DeleteDnsAuthorizationOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *DeleteDnsAuthorizationOperation) 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 *DeleteDnsAuthorizationOperation) Name() string {
	return op.lro.Name()
}

// UpdateCertificateOperation manages a long-running operation from UpdateCertificate.
type UpdateCertificateOperation struct {
	lro *longrunning.Operation
}

// UpdateCertificateOperation returns a new UpdateCertificateOperation from a given name.
// The name must be that of a previously created UpdateCertificateOperation, possibly from a different process.
func (c *gRPCClient) UpdateCertificateOperation(name string) *UpdateCertificateOperation {
	return &UpdateCertificateOperation{
		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 *UpdateCertificateOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.Certificate, error) {
	var resp certificatemanagerpb.Certificate
	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 *UpdateCertificateOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.Certificate, error) {
	var resp certificatemanagerpb.Certificate
	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 *UpdateCertificateOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *UpdateCertificateOperation) 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 *UpdateCertificateOperation) Name() string {
	return op.lro.Name()
}

// UpdateCertificateMapOperation manages a long-running operation from UpdateCertificateMap.
type UpdateCertificateMapOperation struct {
	lro *longrunning.Operation
}

// UpdateCertificateMapOperation returns a new UpdateCertificateMapOperation from a given name.
// The name must be that of a previously created UpdateCertificateMapOperation, possibly from a different process.
func (c *gRPCClient) UpdateCertificateMapOperation(name string) *UpdateCertificateMapOperation {
	return &UpdateCertificateMapOperation{
		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 *UpdateCertificateMapOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMap, error) {
	var resp certificatemanagerpb.CertificateMap
	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 *UpdateCertificateMapOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMap, error) {
	var resp certificatemanagerpb.CertificateMap
	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 *UpdateCertificateMapOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *UpdateCertificateMapOperation) 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 *UpdateCertificateMapOperation) Name() string {
	return op.lro.Name()
}

// UpdateCertificateMapEntryOperation manages a long-running operation from UpdateCertificateMapEntry.
type UpdateCertificateMapEntryOperation struct {
	lro *longrunning.Operation
}

// UpdateCertificateMapEntryOperation returns a new UpdateCertificateMapEntryOperation from a given name.
// The name must be that of a previously created UpdateCertificateMapEntryOperation, possibly from a different process.
func (c *gRPCClient) UpdateCertificateMapEntryOperation(name string) *UpdateCertificateMapEntryOperation {
	return &UpdateCertificateMapEntryOperation{
		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 *UpdateCertificateMapEntryOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMapEntry, error) {
	var resp certificatemanagerpb.CertificateMapEntry
	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 *UpdateCertificateMapEntryOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.CertificateMapEntry, error) {
	var resp certificatemanagerpb.CertificateMapEntry
	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 *UpdateCertificateMapEntryOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *UpdateCertificateMapEntryOperation) 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 *UpdateCertificateMapEntryOperation) Name() string {
	return op.lro.Name()
}

// UpdateDnsAuthorizationOperation manages a long-running operation from UpdateDnsAuthorization.
type UpdateDnsAuthorizationOperation struct {
	lro *longrunning.Operation
}

// UpdateDnsAuthorizationOperation returns a new UpdateDnsAuthorizationOperation from a given name.
// The name must be that of a previously created UpdateDnsAuthorizationOperation, possibly from a different process.
func (c *gRPCClient) UpdateDnsAuthorizationOperation(name string) *UpdateDnsAuthorizationOperation {
	return &UpdateDnsAuthorizationOperation{
		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 *UpdateDnsAuthorizationOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.DnsAuthorization, error) {
	var resp certificatemanagerpb.DnsAuthorization
	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 *UpdateDnsAuthorizationOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*certificatemanagerpb.DnsAuthorization, error) {
	var resp certificatemanagerpb.DnsAuthorization
	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 *UpdateDnsAuthorizationOperation) Metadata() (*certificatemanagerpb.OperationMetadata, error) {
	var meta certificatemanagerpb.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 *UpdateDnsAuthorizationOperation) 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 *UpdateDnsAuthorizationOperation) Name() string {
	return op.lro.Name()
}

// CertificateIterator manages a stream of *certificatemanagerpb.Certificate.
type CertificateIterator struct {
	items    []*certificatemanagerpb.Certificate
	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 []*certificatemanagerpb.Certificate, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *CertificateIterator) 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 *CertificateIterator) Next() (*certificatemanagerpb.Certificate, error) {
	var item *certificatemanagerpb.Certificate
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

func (it *CertificateIterator) bufLen() int {
	return len(it.items)
}

func (it *CertificateIterator) takeBuf() interface{} {
	b := it.items
	it.items = nil
	return b
}

// CertificateMapEntryIterator manages a stream of *certificatemanagerpb.CertificateMapEntry.
type CertificateMapEntryIterator struct {
	items    []*certificatemanagerpb.CertificateMapEntry
	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 []*certificatemanagerpb.CertificateMapEntry, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *CertificateMapEntryIterator) 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 *CertificateMapEntryIterator) Next() (*certificatemanagerpb.CertificateMapEntry, error) {
	var item *certificatemanagerpb.CertificateMapEntry
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

func (it *CertificateMapEntryIterator) bufLen() int {
	return len(it.items)
}

func (it *CertificateMapEntryIterator) takeBuf() interface{} {
	b := it.items
	it.items = nil
	return b
}

// CertificateMapIterator manages a stream of *certificatemanagerpb.CertificateMap.
type CertificateMapIterator struct {
	items    []*certificatemanagerpb.CertificateMap
	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 []*certificatemanagerpb.CertificateMap, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *CertificateMapIterator) 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 *CertificateMapIterator) Next() (*certificatemanagerpb.CertificateMap, error) {
	var item *certificatemanagerpb.CertificateMap
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

func (it *CertificateMapIterator) bufLen() int {
	return len(it.items)
}

func (it *CertificateMapIterator) takeBuf() interface{} {
	b := it.items
	it.items = nil
	return b
}

// DnsAuthorizationIterator manages a stream of *certificatemanagerpb.DnsAuthorization.
type DnsAuthorizationIterator struct {
	items    []*certificatemanagerpb.DnsAuthorization
	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 []*certificatemanagerpb.DnsAuthorization, nextPageToken string, err error)
}

// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *DnsAuthorizationIterator) 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 *DnsAuthorizationIterator) Next() (*certificatemanagerpb.DnsAuthorization, error) {
	var item *certificatemanagerpb.DnsAuthorization
	if err := it.nextFunc(); err != nil {
		return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
}

func (it *DnsAuthorizationIterator) bufLen() int {
	return len(it.items)
}

func (it *DnsAuthorizationIterator) takeBuf() interface{} {
	b := it.items
	it.items = nil
	return b
}