cloud.google.com/go/aiplatform@v1.106.0/apiv1/model_client.go

// Copyright 2025 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 aiplatform

import (
	"context"
	"fmt"
	"log/slog"
	"math"
	"net/url"

	aiplatformpb "cloud.google.com/go/aiplatform/apiv1/aiplatformpb"
	iampb "cloud.google.com/go/iam/apiv1/iampb"
	"cloud.google.com/go/longrunning"
	lroauto "cloud.google.com/go/longrunning/autogen"
	longrunningpb "cloud.google.com/go/longrunning/autogen/longrunningpb"
	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"
	locationpb "google.golang.org/genproto/googleapis/cloud/location"
	"google.golang.org/grpc"
	"google.golang.org/protobuf/proto"
)

var newModelClientHook clientHook

// ModelCallOptions contains the retry settings for each method of ModelClient.
type ModelCallOptions struct {
	UploadModel                      []gax.CallOption
	GetModel                         []gax.CallOption
	ListModels                       []gax.CallOption
	ListModelVersions                []gax.CallOption
	ListModelVersionCheckpoints      []gax.CallOption
	UpdateModel                      []gax.CallOption
	UpdateExplanationDataset         []gax.CallOption
	DeleteModel                      []gax.CallOption
	DeleteModelVersion               []gax.CallOption
	MergeVersionAliases              []gax.CallOption
	ExportModel                      []gax.CallOption
	CopyModel                        []gax.CallOption
	ImportModelEvaluation            []gax.CallOption
	BatchImportModelEvaluationSlices []gax.CallOption
	BatchImportEvaluatedAnnotations  []gax.CallOption
	GetModelEvaluation               []gax.CallOption
	ListModelEvaluations             []gax.CallOption
	GetModelEvaluationSlice          []gax.CallOption
	ListModelEvaluationSlices        []gax.CallOption
	GetLocation                      []gax.CallOption
	ListLocations                    []gax.CallOption
	GetIamPolicy                     []gax.CallOption
	SetIamPolicy                     []gax.CallOption
	TestIamPermissions               []gax.CallOption
	CancelOperation                  []gax.CallOption
	DeleteOperation                  []gax.CallOption
	GetOperation                     []gax.CallOption
	ListOperations                   []gax.CallOption
	WaitOperation                    []gax.CallOption
}

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

func defaultModelCallOptions() *ModelCallOptions {
	return &ModelCallOptions{
		UploadModel:                      []gax.CallOption{},
		GetModel:                         []gax.CallOption{},
		ListModels:                       []gax.CallOption{},
		ListModelVersions:                []gax.CallOption{},
		ListModelVersionCheckpoints:      []gax.CallOption{},
		UpdateModel:                      []gax.CallOption{},
		UpdateExplanationDataset:         []gax.CallOption{},
		DeleteModel:                      []gax.CallOption{},
		DeleteModelVersion:               []gax.CallOption{},
		MergeVersionAliases:              []gax.CallOption{},
		ExportModel:                      []gax.CallOption{},
		CopyModel:                        []gax.CallOption{},
		ImportModelEvaluation:            []gax.CallOption{},
		BatchImportModelEvaluationSlices: []gax.CallOption{},
		BatchImportEvaluatedAnnotations:  []gax.CallOption{},
		GetModelEvaluation:               []gax.CallOption{},
		ListModelEvaluations:             []gax.CallOption{},
		GetModelEvaluationSlice:          []gax.CallOption{},
		ListModelEvaluationSlices:        []gax.CallOption{},
		GetLocation:                      []gax.CallOption{},
		ListLocations:                    []gax.CallOption{},
		GetIamPolicy:                     []gax.CallOption{},
		SetIamPolicy:                     []gax.CallOption{},
		TestIamPermissions:               []gax.CallOption{},
		CancelOperation:                  []gax.CallOption{},
		DeleteOperation:                  []gax.CallOption{},
		GetOperation:                     []gax.CallOption{},
		ListOperations:                   []gax.CallOption{},
		WaitOperation:                    []gax.CallOption{},
	}
}

// internalModelClient is an interface that defines the methods available from Vertex AI API.
type internalModelClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	UploadModel(context.Context, *aiplatformpb.UploadModelRequest, ...gax.CallOption) (*UploadModelOperation, error)
	UploadModelOperation(name string) *UploadModelOperation
	GetModel(context.Context, *aiplatformpb.GetModelRequest, ...gax.CallOption) (*aiplatformpb.Model, error)
	ListModels(context.Context, *aiplatformpb.ListModelsRequest, ...gax.CallOption) *ModelIterator
	ListModelVersions(context.Context, *aiplatformpb.ListModelVersionsRequest, ...gax.CallOption) *ModelIterator
	ListModelVersionCheckpoints(context.Context, *aiplatformpb.ListModelVersionCheckpointsRequest, ...gax.CallOption) *ModelVersionCheckpointIterator
	UpdateModel(context.Context, *aiplatformpb.UpdateModelRequest, ...gax.CallOption) (*aiplatformpb.Model, error)
	UpdateExplanationDataset(context.Context, *aiplatformpb.UpdateExplanationDatasetRequest, ...gax.CallOption) (*UpdateExplanationDatasetOperation, error)
	UpdateExplanationDatasetOperation(name string) *UpdateExplanationDatasetOperation
	DeleteModel(context.Context, *aiplatformpb.DeleteModelRequest, ...gax.CallOption) (*DeleteModelOperation, error)
	DeleteModelOperation(name string) *DeleteModelOperation
	DeleteModelVersion(context.Context, *aiplatformpb.DeleteModelVersionRequest, ...gax.CallOption) (*DeleteModelVersionOperation, error)
	DeleteModelVersionOperation(name string) *DeleteModelVersionOperation
	MergeVersionAliases(context.Context, *aiplatformpb.MergeVersionAliasesRequest, ...gax.CallOption) (*aiplatformpb.Model, error)
	ExportModel(context.Context, *aiplatformpb.ExportModelRequest, ...gax.CallOption) (*ExportModelOperation, error)
	ExportModelOperation(name string) *ExportModelOperation
	CopyModel(context.Context, *aiplatformpb.CopyModelRequest, ...gax.CallOption) (*CopyModelOperation, error)
	CopyModelOperation(name string) *CopyModelOperation
	ImportModelEvaluation(context.Context, *aiplatformpb.ImportModelEvaluationRequest, ...gax.CallOption) (*aiplatformpb.ModelEvaluation, error)
	BatchImportModelEvaluationSlices(context.Context, *aiplatformpb.BatchImportModelEvaluationSlicesRequest, ...gax.CallOption) (*aiplatformpb.BatchImportModelEvaluationSlicesResponse, error)
	BatchImportEvaluatedAnnotations(context.Context, *aiplatformpb.BatchImportEvaluatedAnnotationsRequest, ...gax.CallOption) (*aiplatformpb.BatchImportEvaluatedAnnotationsResponse, error)
	GetModelEvaluation(context.Context, *aiplatformpb.GetModelEvaluationRequest, ...gax.CallOption) (*aiplatformpb.ModelEvaluation, error)
	ListModelEvaluations(context.Context, *aiplatformpb.ListModelEvaluationsRequest, ...gax.CallOption) *ModelEvaluationIterator
	GetModelEvaluationSlice(context.Context, *aiplatformpb.GetModelEvaluationSliceRequest, ...gax.CallOption) (*aiplatformpb.ModelEvaluationSlice, error)
	ListModelEvaluationSlices(context.Context, *aiplatformpb.ListModelEvaluationSlicesRequest, ...gax.CallOption) *ModelEvaluationSliceIterator
	GetLocation(context.Context, *locationpb.GetLocationRequest, ...gax.CallOption) (*locationpb.Location, error)
	ListLocations(context.Context, *locationpb.ListLocationsRequest, ...gax.CallOption) *LocationIterator
	GetIamPolicy(context.Context, *iampb.GetIamPolicyRequest, ...gax.CallOption) (*iampb.Policy, error)
	SetIamPolicy(context.Context, *iampb.SetIamPolicyRequest, ...gax.CallOption) (*iampb.Policy, error)
	TestIamPermissions(context.Context, *iampb.TestIamPermissionsRequest, ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error)
	CancelOperation(context.Context, *longrunningpb.CancelOperationRequest, ...gax.CallOption) error
	DeleteOperation(context.Context, *longrunningpb.DeleteOperationRequest, ...gax.CallOption) error
	GetOperation(context.Context, *longrunningpb.GetOperationRequest, ...gax.CallOption) (*longrunningpb.Operation, error)
	ListOperations(context.Context, *longrunningpb.ListOperationsRequest, ...gax.CallOption) *OperationIterator
	WaitOperation(context.Context, *longrunningpb.WaitOperationRequest, ...gax.CallOption) (*longrunningpb.Operation, error)
}

// ModelClient is a client for interacting with Vertex AI API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// A service for managing Vertex AI’s machine learning Models.
type ModelClient struct {
	// The internal transport-dependent client.
	internalClient internalModelClient

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

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

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

// UploadModel uploads a Model artifact into Vertex AI.
func (c *ModelClient) UploadModel(ctx context.Context, req *aiplatformpb.UploadModelRequest, opts ...gax.CallOption) (*UploadModelOperation, error) {
	return c.internalClient.UploadModel(ctx, req, opts...)
}

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

// GetModel gets a Model.
func (c *ModelClient) GetModel(ctx context.Context, req *aiplatformpb.GetModelRequest, opts ...gax.CallOption) (*aiplatformpb.Model, error) {
	return c.internalClient.GetModel(ctx, req, opts...)
}

// ListModels lists Models in a Location.
func (c *ModelClient) ListModels(ctx context.Context, req *aiplatformpb.ListModelsRequest, opts ...gax.CallOption) *ModelIterator {
	return c.internalClient.ListModels(ctx, req, opts...)
}

// ListModelVersions lists versions of the specified model.
func (c *ModelClient) ListModelVersions(ctx context.Context, req *aiplatformpb.ListModelVersionsRequest, opts ...gax.CallOption) *ModelIterator {
	return c.internalClient.ListModelVersions(ctx, req, opts...)
}

// ListModelVersionCheckpoints lists checkpoints of the specified model version.
func (c *ModelClient) ListModelVersionCheckpoints(ctx context.Context, req *aiplatformpb.ListModelVersionCheckpointsRequest, opts ...gax.CallOption) *ModelVersionCheckpointIterator {
	return c.internalClient.ListModelVersionCheckpoints(ctx, req, opts...)
}

// UpdateModel updates a Model.
func (c *ModelClient) UpdateModel(ctx context.Context, req *aiplatformpb.UpdateModelRequest, opts ...gax.CallOption) (*aiplatformpb.Model, error) {
	return c.internalClient.UpdateModel(ctx, req, opts...)
}

// UpdateExplanationDataset incrementally update the dataset used for an examples model.
func (c *ModelClient) UpdateExplanationDataset(ctx context.Context, req *aiplatformpb.UpdateExplanationDatasetRequest, opts ...gax.CallOption) (*UpdateExplanationDatasetOperation, error) {
	return c.internalClient.UpdateExplanationDataset(ctx, req, opts...)
}

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

// DeleteModel deletes a Model.
//
// A model cannot be deleted if any
// Endpoint resource has a
// DeployedModel based on the
// model in its
// deployed_models
// field.
func (c *ModelClient) DeleteModel(ctx context.Context, req *aiplatformpb.DeleteModelRequest, opts ...gax.CallOption) (*DeleteModelOperation, error) {
	return c.internalClient.DeleteModel(ctx, req, opts...)
}

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

// DeleteModelVersion deletes a Model version.
//
// Model version can only be deleted if there are no
// DeployedModels created from it.
// Deleting the only version in the Model is not allowed. Use
// DeleteModel for
// deleting the Model instead.
func (c *ModelClient) DeleteModelVersion(ctx context.Context, req *aiplatformpb.DeleteModelVersionRequest, opts ...gax.CallOption) (*DeleteModelVersionOperation, error) {
	return c.internalClient.DeleteModelVersion(ctx, req, opts...)
}

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

// MergeVersionAliases merges a set of aliases for a Model version.
func (c *ModelClient) MergeVersionAliases(ctx context.Context, req *aiplatformpb.MergeVersionAliasesRequest, opts ...gax.CallOption) (*aiplatformpb.Model, error) {
	return c.internalClient.MergeVersionAliases(ctx, req, opts...)
}

// ExportModel exports a trained, exportable Model to a location specified by the
// user. A Model is considered to be exportable if it has at least one
// [supported export
// format][google.cloud.aiplatform.v1.Model.supported_export_formats].
func (c *ModelClient) ExportModel(ctx context.Context, req *aiplatformpb.ExportModelRequest, opts ...gax.CallOption) (*ExportModelOperation, error) {
	return c.internalClient.ExportModel(ctx, req, opts...)
}

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

// CopyModel copies an already existing Vertex AI Model into the specified Location.
// The source Model must exist in the same Project.
// When copying custom Models, the users themselves are responsible for
// Model.metadata content to be
// region-agnostic, as well as making sure that any resources (e.g. files) it
// depends on remain accessible.
func (c *ModelClient) CopyModel(ctx context.Context, req *aiplatformpb.CopyModelRequest, opts ...gax.CallOption) (*CopyModelOperation, error) {
	return c.internalClient.CopyModel(ctx, req, opts...)
}

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

// ImportModelEvaluation imports an externally generated ModelEvaluation.
func (c *ModelClient) ImportModelEvaluation(ctx context.Context, req *aiplatformpb.ImportModelEvaluationRequest, opts ...gax.CallOption) (*aiplatformpb.ModelEvaluation, error) {
	return c.internalClient.ImportModelEvaluation(ctx, req, opts...)
}

// BatchImportModelEvaluationSlices imports a list of externally generated ModelEvaluationSlice.
func (c *ModelClient) BatchImportModelEvaluationSlices(ctx context.Context, req *aiplatformpb.BatchImportModelEvaluationSlicesRequest, opts ...gax.CallOption) (*aiplatformpb.BatchImportModelEvaluationSlicesResponse, error) {
	return c.internalClient.BatchImportModelEvaluationSlices(ctx, req, opts...)
}

// BatchImportEvaluatedAnnotations imports a list of externally generated EvaluatedAnnotations.
func (c *ModelClient) BatchImportEvaluatedAnnotations(ctx context.Context, req *aiplatformpb.BatchImportEvaluatedAnnotationsRequest, opts ...gax.CallOption) (*aiplatformpb.BatchImportEvaluatedAnnotationsResponse, error) {
	return c.internalClient.BatchImportEvaluatedAnnotations(ctx, req, opts...)
}

// GetModelEvaluation gets a ModelEvaluation.
func (c *ModelClient) GetModelEvaluation(ctx context.Context, req *aiplatformpb.GetModelEvaluationRequest, opts ...gax.CallOption) (*aiplatformpb.ModelEvaluation, error) {
	return c.internalClient.GetModelEvaluation(ctx, req, opts...)
}

// ListModelEvaluations lists ModelEvaluations in a Model.
func (c *ModelClient) ListModelEvaluations(ctx context.Context, req *aiplatformpb.ListModelEvaluationsRequest, opts ...gax.CallOption) *ModelEvaluationIterator {
	return c.internalClient.ListModelEvaluations(ctx, req, opts...)
}

// GetModelEvaluationSlice gets a ModelEvaluationSlice.
func (c *ModelClient) GetModelEvaluationSlice(ctx context.Context, req *aiplatformpb.GetModelEvaluationSliceRequest, opts ...gax.CallOption) (*aiplatformpb.ModelEvaluationSlice, error) {
	return c.internalClient.GetModelEvaluationSlice(ctx, req, opts...)
}

// ListModelEvaluationSlices lists ModelEvaluationSlices in a ModelEvaluation.
func (c *ModelClient) ListModelEvaluationSlices(ctx context.Context, req *aiplatformpb.ListModelEvaluationSlicesRequest, opts ...gax.CallOption) *ModelEvaluationSliceIterator {
	return c.internalClient.ListModelEvaluationSlices(ctx, req, opts...)
}

// GetLocation gets information about a location.
func (c *ModelClient) GetLocation(ctx context.Context, req *locationpb.GetLocationRequest, opts ...gax.CallOption) (*locationpb.Location, error) {
	return c.internalClient.GetLocation(ctx, req, opts...)
}

// ListLocations lists information about the supported locations for this service.
func (c *ModelClient) ListLocations(ctx context.Context, req *locationpb.ListLocationsRequest, opts ...gax.CallOption) *LocationIterator {
	return c.internalClient.ListLocations(ctx, req, opts...)
}

// GetIamPolicy gets the access control policy for a resource. Returns an empty policy
// if the resource exists and does not have a policy set.
func (c *ModelClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	return c.internalClient.GetIamPolicy(ctx, req, opts...)
}

// SetIamPolicy sets the access control policy on the specified resource. Replaces
// any existing policy.
//
// Can return NOT_FOUND, INVALID_ARGUMENT, and PERMISSION_DENIED
// errors.
func (c *ModelClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	return c.internalClient.SetIamPolicy(ctx, req, opts...)
}

// TestIamPermissions returns permissions that a caller has on the specified resource. If the
// resource does not exist, this will return an empty set of
// permissions, not a NOT_FOUND error.
//
// Note: This operation is designed to be used for building
// permission-aware UIs and command-line tools, not for authorization
// checking. This operation may “fail open” without warning.
func (c *ModelClient) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error) {
	return c.internalClient.TestIamPermissions(ctx, req, opts...)
}

// CancelOperation is a utility method from google.longrunning.Operations.
func (c *ModelClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	return c.internalClient.CancelOperation(ctx, req, opts...)
}

// DeleteOperation is a utility method from google.longrunning.Operations.
func (c *ModelClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteOperation(ctx, req, opts...)
}

// GetOperation is a utility method from google.longrunning.Operations.
func (c *ModelClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	return c.internalClient.GetOperation(ctx, req, opts...)
}

// ListOperations is a utility method from google.longrunning.Operations.
func (c *ModelClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	return c.internalClient.ListOperations(ctx, req, opts...)
}

// WaitOperation is a utility method from google.longrunning.Operations.
func (c *ModelClient) WaitOperation(ctx context.Context, req *longrunningpb.WaitOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	return c.internalClient.WaitOperation(ctx, req, opts...)
}

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

	// Points back to the CallOptions field of the containing ModelClient
	CallOptions **ModelCallOptions

	// The gRPC API client.
	modelClient aiplatformpb.ModelServiceClient

	// 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

	operationsClient longrunningpb.OperationsClient

	iamPolicyClient iampb.IAMPolicyClient

	locationsClient locationpb.LocationsClient

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

	logger *slog.Logger
}

// NewModelClient creates a new model service client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// A service for managing Vertex AI’s machine learning Models.
func NewModelClient(ctx context.Context, opts ...option.ClientOption) (*ModelClient, error) {
	clientOpts := defaultModelGRPCClientOptions()
	if newModelClientHook != nil {
		hookOpts, err := newModelClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

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

	c := &modelGRPCClient{
		connPool:         connPool,
		modelClient:      aiplatformpb.NewModelServiceClient(connPool),
		CallOptions:      &client.CallOptions,
		logger:           internaloption.GetLogger(opts),
		operationsClient: longrunningpb.NewOperationsClient(connPool),
		iamPolicyClient:  iampb.NewIAMPolicyClient(connPool),
		locationsClient:  locationpb.NewLocationsClient(connPool),
	}
	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: Connections are now pooled so this method does not always
// return the same resource.
func (c *modelGRPCClient) 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 *modelGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version, "pb", protoVersion)
	c.xGoogHeaders = []string{
		"x-goog-api-client", gax.XGoogHeader(kv...),
	}
}

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

func (c *modelGRPCClient) UploadModel(ctx context.Context, req *aiplatformpb.UploadModelRequest, opts ...gax.CallOption) (*UploadModelOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).UploadModel[0:len((*c.CallOptions).UploadModel):len((*c.CallOptions).UploadModel)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.UploadModel, req, settings.GRPC, c.logger, "UploadModel")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UploadModelOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *modelGRPCClient) GetModel(ctx context.Context, req *aiplatformpb.GetModelRequest, opts ...gax.CallOption) (*aiplatformpb.Model, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetModel[0:len((*c.CallOptions).GetModel):len((*c.CallOptions).GetModel)], opts...)
	var resp *aiplatformpb.Model
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.GetModel, req, settings.GRPC, c.logger, "GetModel")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) ListModels(ctx context.Context, req *aiplatformpb.ListModelsRequest, opts ...gax.CallOption) *ModelIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListModels[0:len((*c.CallOptions).ListModels):len((*c.CallOptions).ListModels)], opts...)
	it := &ModelIterator{}
	req = proto.Clone(req).(*aiplatformpb.ListModelsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*aiplatformpb.Model, string, error) {
		resp := &aiplatformpb.ListModelsResponse{}
		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 = executeRPC(ctx, c.modelClient.ListModels, req, settings.GRPC, c.logger, "ListModels")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetModels(), 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 *modelGRPCClient) ListModelVersions(ctx context.Context, req *aiplatformpb.ListModelVersionsRequest, opts ...gax.CallOption) *ModelIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListModelVersions[0:len((*c.CallOptions).ListModelVersions):len((*c.CallOptions).ListModelVersions)], opts...)
	it := &ModelIterator{}
	req = proto.Clone(req).(*aiplatformpb.ListModelVersionsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*aiplatformpb.Model, string, error) {
		resp := &aiplatformpb.ListModelVersionsResponse{}
		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 = executeRPC(ctx, c.modelClient.ListModelVersions, req, settings.GRPC, c.logger, "ListModelVersions")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetModels(), 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 *modelGRPCClient) ListModelVersionCheckpoints(ctx context.Context, req *aiplatformpb.ListModelVersionCheckpointsRequest, opts ...gax.CallOption) *ModelVersionCheckpointIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListModelVersionCheckpoints[0:len((*c.CallOptions).ListModelVersionCheckpoints):len((*c.CallOptions).ListModelVersionCheckpoints)], opts...)
	it := &ModelVersionCheckpointIterator{}
	req = proto.Clone(req).(*aiplatformpb.ListModelVersionCheckpointsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*aiplatformpb.ModelVersionCheckpoint, string, error) {
		resp := &aiplatformpb.ListModelVersionCheckpointsResponse{}
		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 = executeRPC(ctx, c.modelClient.ListModelVersionCheckpoints, req, settings.GRPC, c.logger, "ListModelVersionCheckpoints")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetCheckpoints(), 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 *modelGRPCClient) UpdateModel(ctx context.Context, req *aiplatformpb.UpdateModelRequest, opts ...gax.CallOption) (*aiplatformpb.Model, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model.name", url.QueryEscape(req.GetModel().GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).UpdateModel[0:len((*c.CallOptions).UpdateModel):len((*c.CallOptions).UpdateModel)], opts...)
	var resp *aiplatformpb.Model
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.UpdateModel, req, settings.GRPC, c.logger, "UpdateModel")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) UpdateExplanationDataset(ctx context.Context, req *aiplatformpb.UpdateExplanationDatasetRequest, opts ...gax.CallOption) (*UpdateExplanationDatasetOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "model", url.QueryEscape(req.GetModel()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).UpdateExplanationDataset[0:len((*c.CallOptions).UpdateExplanationDataset):len((*c.CallOptions).UpdateExplanationDataset)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.UpdateExplanationDataset, req, settings.GRPC, c.logger, "UpdateExplanationDataset")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UpdateExplanationDatasetOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *modelGRPCClient) DeleteModel(ctx context.Context, req *aiplatformpb.DeleteModelRequest, opts ...gax.CallOption) (*DeleteModelOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).DeleteModel[0:len((*c.CallOptions).DeleteModel):len((*c.CallOptions).DeleteModel)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.DeleteModel, req, settings.GRPC, c.logger, "DeleteModel")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteModelOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *modelGRPCClient) DeleteModelVersion(ctx context.Context, req *aiplatformpb.DeleteModelVersionRequest, opts ...gax.CallOption) (*DeleteModelVersionOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).DeleteModelVersion[0:len((*c.CallOptions).DeleteModelVersion):len((*c.CallOptions).DeleteModelVersion)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.DeleteModelVersion, req, settings.GRPC, c.logger, "DeleteModelVersion")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteModelVersionOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *modelGRPCClient) MergeVersionAliases(ctx context.Context, req *aiplatformpb.MergeVersionAliasesRequest, opts ...gax.CallOption) (*aiplatformpb.Model, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).MergeVersionAliases[0:len((*c.CallOptions).MergeVersionAliases):len((*c.CallOptions).MergeVersionAliases)], opts...)
	var resp *aiplatformpb.Model
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.MergeVersionAliases, req, settings.GRPC, c.logger, "MergeVersionAliases")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) ExportModel(ctx context.Context, req *aiplatformpb.ExportModelRequest, opts ...gax.CallOption) (*ExportModelOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ExportModel[0:len((*c.CallOptions).ExportModel):len((*c.CallOptions).ExportModel)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.ExportModel, req, settings.GRPC, c.logger, "ExportModel")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &ExportModelOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *modelGRPCClient) CopyModel(ctx context.Context, req *aiplatformpb.CopyModelRequest, opts ...gax.CallOption) (*CopyModelOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CopyModel[0:len((*c.CallOptions).CopyModel):len((*c.CallOptions).CopyModel)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.CopyModel, req, settings.GRPC, c.logger, "CopyModel")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CopyModelOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *modelGRPCClient) ImportModelEvaluation(ctx context.Context, req *aiplatformpb.ImportModelEvaluationRequest, opts ...gax.CallOption) (*aiplatformpb.ModelEvaluation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ImportModelEvaluation[0:len((*c.CallOptions).ImportModelEvaluation):len((*c.CallOptions).ImportModelEvaluation)], opts...)
	var resp *aiplatformpb.ModelEvaluation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.ImportModelEvaluation, req, settings.GRPC, c.logger, "ImportModelEvaluation")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) BatchImportModelEvaluationSlices(ctx context.Context, req *aiplatformpb.BatchImportModelEvaluationSlicesRequest, opts ...gax.CallOption) (*aiplatformpb.BatchImportModelEvaluationSlicesResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).BatchImportModelEvaluationSlices[0:len((*c.CallOptions).BatchImportModelEvaluationSlices):len((*c.CallOptions).BatchImportModelEvaluationSlices)], opts...)
	var resp *aiplatformpb.BatchImportModelEvaluationSlicesResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.BatchImportModelEvaluationSlices, req, settings.GRPC, c.logger, "BatchImportModelEvaluationSlices")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) BatchImportEvaluatedAnnotations(ctx context.Context, req *aiplatformpb.BatchImportEvaluatedAnnotationsRequest, opts ...gax.CallOption) (*aiplatformpb.BatchImportEvaluatedAnnotationsResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).BatchImportEvaluatedAnnotations[0:len((*c.CallOptions).BatchImportEvaluatedAnnotations):len((*c.CallOptions).BatchImportEvaluatedAnnotations)], opts...)
	var resp *aiplatformpb.BatchImportEvaluatedAnnotationsResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.BatchImportEvaluatedAnnotations, req, settings.GRPC, c.logger, "BatchImportEvaluatedAnnotations")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) GetModelEvaluation(ctx context.Context, req *aiplatformpb.GetModelEvaluationRequest, opts ...gax.CallOption) (*aiplatformpb.ModelEvaluation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetModelEvaluation[0:len((*c.CallOptions).GetModelEvaluation):len((*c.CallOptions).GetModelEvaluation)], opts...)
	var resp *aiplatformpb.ModelEvaluation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.GetModelEvaluation, req, settings.GRPC, c.logger, "GetModelEvaluation")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) ListModelEvaluations(ctx context.Context, req *aiplatformpb.ListModelEvaluationsRequest, opts ...gax.CallOption) *ModelEvaluationIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListModelEvaluations[0:len((*c.CallOptions).ListModelEvaluations):len((*c.CallOptions).ListModelEvaluations)], opts...)
	it := &ModelEvaluationIterator{}
	req = proto.Clone(req).(*aiplatformpb.ListModelEvaluationsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*aiplatformpb.ModelEvaluation, string, error) {
		resp := &aiplatformpb.ListModelEvaluationsResponse{}
		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 = executeRPC(ctx, c.modelClient.ListModelEvaluations, req, settings.GRPC, c.logger, "ListModelEvaluations")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetModelEvaluations(), 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 *modelGRPCClient) GetModelEvaluationSlice(ctx context.Context, req *aiplatformpb.GetModelEvaluationSliceRequest, opts ...gax.CallOption) (*aiplatformpb.ModelEvaluationSlice, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetModelEvaluationSlice[0:len((*c.CallOptions).GetModelEvaluationSlice):len((*c.CallOptions).GetModelEvaluationSlice)], opts...)
	var resp *aiplatformpb.ModelEvaluationSlice
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.modelClient.GetModelEvaluationSlice, req, settings.GRPC, c.logger, "GetModelEvaluationSlice")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) ListModelEvaluationSlices(ctx context.Context, req *aiplatformpb.ListModelEvaluationSlicesRequest, opts ...gax.CallOption) *ModelEvaluationSliceIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListModelEvaluationSlices[0:len((*c.CallOptions).ListModelEvaluationSlices):len((*c.CallOptions).ListModelEvaluationSlices)], opts...)
	it := &ModelEvaluationSliceIterator{}
	req = proto.Clone(req).(*aiplatformpb.ListModelEvaluationSlicesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*aiplatformpb.ModelEvaluationSlice, string, error) {
		resp := &aiplatformpb.ListModelEvaluationSlicesResponse{}
		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 = executeRPC(ctx, c.modelClient.ListModelEvaluationSlices, req, settings.GRPC, c.logger, "ListModelEvaluationSlices")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetModelEvaluationSlices(), 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 *modelGRPCClient) GetLocation(ctx context.Context, req *locationpb.GetLocationRequest, opts ...gax.CallOption) (*locationpb.Location, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetLocation[0:len((*c.CallOptions).GetLocation):len((*c.CallOptions).GetLocation)], opts...)
	var resp *locationpb.Location
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.locationsClient.GetLocation, req, settings.GRPC, c.logger, "GetLocation")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) ListLocations(ctx context.Context, req *locationpb.ListLocationsRequest, opts ...gax.CallOption) *LocationIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListLocations[0:len((*c.CallOptions).ListLocations):len((*c.CallOptions).ListLocations)], opts...)
	it := &LocationIterator{}
	req = proto.Clone(req).(*locationpb.ListLocationsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*locationpb.Location, string, error) {
		resp := &locationpb.ListLocationsResponse{}
		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 = executeRPC(ctx, c.locationsClient.ListLocations, req, settings.GRPC, c.logger, "ListLocations")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetLocations(), 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 *modelGRPCClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetIamPolicy[0:len((*c.CallOptions).GetIamPolicy):len((*c.CallOptions).GetIamPolicy)], opts...)
	var resp *iampb.Policy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.iamPolicyClient.GetIamPolicy, req, settings.GRPC, c.logger, "GetIamPolicy")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).SetIamPolicy[0:len((*c.CallOptions).SetIamPolicy):len((*c.CallOptions).SetIamPolicy)], opts...)
	var resp *iampb.Policy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.iamPolicyClient.SetIamPolicy, req, settings.GRPC, c.logger, "SetIamPolicy")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).TestIamPermissions[0:len((*c.CallOptions).TestIamPermissions):len((*c.CallOptions).TestIamPermissions)], opts...)
	var resp *iampb.TestIamPermissionsResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.iamPolicyClient.TestIamPermissions, req, settings.GRPC, c.logger, "TestIamPermissions")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CancelOperation[0:len((*c.CallOptions).CancelOperation):len((*c.CallOptions).CancelOperation)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = executeRPC(ctx, c.operationsClient.CancelOperation, req, settings.GRPC, c.logger, "CancelOperation")
		return err
	}, opts...)
	return err
}

func (c *modelGRPCClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, opts ...gax.CallOption) error {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).DeleteOperation[0:len((*c.CallOptions).DeleteOperation):len((*c.CallOptions).DeleteOperation)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = executeRPC(ctx, c.operationsClient.DeleteOperation, req, settings.GRPC, c.logger, "DeleteOperation")
		return err
	}, opts...)
	return err
}

func (c *modelGRPCClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetOperation[0:len((*c.CallOptions).GetOperation):len((*c.CallOptions).GetOperation)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.operationsClient.GetOperation, req, settings.GRPC, c.logger, "GetOperation")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *modelGRPCClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListOperations[0:len((*c.CallOptions).ListOperations):len((*c.CallOptions).ListOperations)], opts...)
	it := &OperationIterator{}
	req = proto.Clone(req).(*longrunningpb.ListOperationsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*longrunningpb.Operation, string, error) {
		resp := &longrunningpb.ListOperationsResponse{}
		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 = executeRPC(ctx, c.operationsClient.ListOperations, req, settings.GRPC, c.logger, "ListOperations")
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetOperations(), 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 *modelGRPCClient) WaitOperation(ctx context.Context, req *longrunningpb.WaitOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).WaitOperation[0:len((*c.CallOptions).WaitOperation):len((*c.CallOptions).WaitOperation)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = executeRPC(ctx, c.operationsClient.WaitOperation, req, settings.GRPC, c.logger, "WaitOperation")
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// CopyModelOperation returns a new CopyModelOperation from a given name.
// The name must be that of a previously created CopyModelOperation, possibly from a different process.
func (c *modelGRPCClient) CopyModelOperation(name string) *CopyModelOperation {
	return &CopyModelOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// DeleteModelOperation returns a new DeleteModelOperation from a given name.
// The name must be that of a previously created DeleteModelOperation, possibly from a different process.
func (c *modelGRPCClient) DeleteModelOperation(name string) *DeleteModelOperation {
	return &DeleteModelOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// DeleteModelVersionOperation returns a new DeleteModelVersionOperation from a given name.
// The name must be that of a previously created DeleteModelVersionOperation, possibly from a different process.
func (c *modelGRPCClient) DeleteModelVersionOperation(name string) *DeleteModelVersionOperation {
	return &DeleteModelVersionOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// ExportModelOperation returns a new ExportModelOperation from a given name.
// The name must be that of a previously created ExportModelOperation, possibly from a different process.
func (c *modelGRPCClient) ExportModelOperation(name string) *ExportModelOperation {
	return &ExportModelOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// UpdateExplanationDatasetOperation returns a new UpdateExplanationDatasetOperation from a given name.
// The name must be that of a previously created UpdateExplanationDatasetOperation, possibly from a different process.
func (c *modelGRPCClient) UpdateExplanationDatasetOperation(name string) *UpdateExplanationDatasetOperation {
	return &UpdateExplanationDatasetOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// UploadModelOperation returns a new UploadModelOperation from a given name.
// The name must be that of a previously created UploadModelOperation, possibly from a different process.
func (c *modelGRPCClient) UploadModelOperation(name string) *UploadModelOperation {
	return &UploadModelOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}