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

package iam

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"
)

// Deletes the permissions boundary for the specified IAM user. Deleting the
// permissions boundary for a user might increase its permissions by allowing the
// user to perform all the actions granted in its permissions policies.
func (c *Client) DeleteUserPermissionsBoundary(ctx context.Context, params *DeleteUserPermissionsBoundaryInput, optFns ...func(*Options)) (*DeleteUserPermissionsBoundaryOutput, error) {
	if params == nil {
		params = &DeleteUserPermissionsBoundaryInput{}
	}

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

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

type DeleteUserPermissionsBoundaryInput struct {

	// The name (friendly name, not ARN) of the IAM user from which you want to remove
	// the permissions boundary.
	//
	// This member is required.
	UserName *string

	noSmithyDocumentSerde
}

type DeleteUserPermissionsBoundaryOutput struct 
    
func (c *Client) addOperationDeleteUserPermissionsBoundaryMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsquery_serializeOpDeleteUserPermissionsBoundary{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsquery_deserializeOpDeleteUserPermissionsBoundary{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "DeleteUserPermissionsBoundary"); 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 = addOpDeleteUserPermissionsBoundaryValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDeleteUserPermissionsBoundary(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
}