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_CreateImageBuilderStreamingURL.go
    path of file: ./repos/aws-sdk-go-v2/service/appstream
    
    the code of the file until where you have to start completion: // Code generated by smithy-go-codegen DO NOT EDIT.

package appstream

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

// Creates a URL to start an image builder streaming session.
func (c *Client) CreateImageBuilderStreamingURL(ctx context.Context, params *CreateImageBuilderStreamingURLInput, optFns ...func(*Options)) (*CreateImageBuilderStreamingURLOutput, error) {
	if params == nil {
		params = &CreateImageBuilderStreamingURLInput{}
	}

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

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

type CreateImageBuilderStreamingURLInput struct {

	// The name of the image builder.
	//
	// This member is required.
	Name *string

	// The time that the streaming URL will be valid, in seconds. Specify a value
	// between 1 and 604800 seconds. The default is 3600 seconds.
	Validity *int64

	noSmithyDocumentSerde
}

type CreateImageBuilderStreamingURLOutput struct {

	// The elapsed time, in seconds after the Unix epoch, when this URL expires.
	Expires *time.Time

	// The URL to start the AppStream 2.0 streaming session.
	StreamingURL *string

	// Metadata pertaining to the operation's result.
	ResultMetadata middleware.Metadata

	noSmithyDocumentSerde
}

func (c *Client) addOperationCreateImageBuilderStreamingURLMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpCreateImageBuilderStreamingURL{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpCreateImageBuilderStreamingURL{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "CreateImageBuilderStreamingURL"); err != nil {
		return fmt.Errorf("add protocol finalizers: %v", err)
	}

	if err = addlegacyEndpoin
    
func (c *Client) addOperationCreateImageBuilderStreamingURLMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpCreateImageBuilderStreamingURL{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpCreateImageBuilderStreamingURL{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "CreateImageBuilderStreamingURL"); 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 = addOpCreateImageBuilderStreamingURLValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opCreateImageBuilderStreamingURL(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
}