You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: api_op_UpdateWorkflow.go
    path of file: ./repos/aws-sdk-go-v2/service/migrationhuborchestrator
    
    the code of the file until where you have to start completion: // Code generated by smithy-go-codegen DO NOT EDIT.

package migrationhuborchestrator

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/service/migrationhuborchestrator/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
	"time"
)

// Update a migration workflow.
func (c *Client) UpdateWorkflow(ctx context.Context, params *UpdateWorkflowInput, optFns ...func(*Options)) (*UpdateWorkflowOutput, error) {
	if params == nil {
		params = &UpdateWorkflowInput{}
	}

	result, metadata, err := c.invokeOperation(ctx, "UpdateWorkflow", params, optFns, c.addOperationUpdateWorkflowMiddlewares)
	if err != nil {
		return nil, err
	}

	out := result.(*UpdateWorkflowOutput)
	out.ResultMetadata = metadata
	return out, nil
}

type UpdateWorkflowInput struct {

	// The ID of the migration workflow.
	//
	// This member is required.
	Id *string

	// The description of the migration workflow.
	Description *string

	// The input parameters required to update a migration workflow.
	InputParameters map[string]types.StepInput

	// The name of the migration workflow.
	Name *string

	// The servers on which a step will be run.
	StepTargets []string

	noSmithyDocumentSerde
}

type UpdateWorkflowOutput struct {

	// The ID of the application configured in Application Discovery Service.
	AdsApplicationConfigurationId *string

	// The Amazon Resource Name (ARN) of the migration workflow.
	Arn *string

	// The time at which the migration workflow was created.
	CreationTime *time.Time

	// The description of the migration workflow.
	Description *string

	// The ID of the migration workflow.
	Id *s
    
func (c *Client) addOperationUpdateWorkflowMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsRestjson1_serializeOpUpdateWorkflow{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpUpdateWorkflow{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "UpdateWorkflow"); err != nil {
		return fmt.Errorf("add protocol finalizers: %v", err)
	}

	if err = addlegacyEndpointContextSetter(stack, options); err != nil {
		return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
		return err
	}
	if err = addClientRequestID(stack); err != nil {
		return err
	}
	if err = addComputeContentLength(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRetry(stack, options); err != nil {
		return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = addRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = addClientUserAgent(stack, options); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = addOpUpdateWorkflowValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opUpdateWorkflow(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = addRecursionDetection(stack); err != nil {
		return err
	}
	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	if err = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	return nil
}