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

package servicecatalog

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

// Stops sharing the specified portfolio with the specified account or
// organization node. Shares to an organization node can only be deleted by the
// management account of an organization or by a delegated administrator. Note that
// if a delegated admin is de-registered, portfolio shares created from that
// account are removed.
func (c *Client) DeletePortfolioShare(ctx context.Context, params *DeletePortfolioShareInput, optFns ...func(*Options)) (*DeletePortfolioShareOutput, error) {
	if params == nil {
		params = &DeletePortfolioShareInput{}
	}

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

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

type DeletePortfolioShareInput struct {

	// The portfolio identifier.
	//
	// This member is required.
	PortfolioId *string

	// The language code.
	//   - jp - Japanese
	//   - zh - Chinese
	AcceptLanguage *string

	// The Amazon Web Services account ID.
	AccountId *string

	// The organization node to whom you are going to stop sharing.
	OrganizationNode *types.OrganizationNode

	noSmithyDocumentSerde
}

type DeletePortfolioShareOutput struct {

	// The portfolio share unique identifier. This will only be returned if delete is
	// made to an organization node.
	PortfolioShareToken *string

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

	noSmithyDocumentSerde
}

func (c *Client) addOperationDeletePortfolioShareMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add
    
func (c *Client) addOperationDeletePortfolioShareMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpDeletePortfolioShare{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpDeletePortfolioShare{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "DeletePortfolioShare"); 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 = addOpDeletePortfolioShareValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDeletePortfolioShare(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
}