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

package rds

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 an Aurora Limitless Database DB shard group.
func (c *Client) DeleteDBShardGroup(ctx context.Context, params *DeleteDBShardGroupInput, optFns ...func(*Options)) (*DeleteDBShardGroupOutput, error) {
	if params == nil {
		params = &DeleteDBShardGroupInput{}
	}

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

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

type DeleteDBShardGroupInput struct {

	// Teh name of the DB shard group to delete.
	//
	// This member is required.
	DBShardGroupIdentifier *string

	noSmithyDocumentSerde
}

type DeleteDBShardGroupOutput struct {

	// Specifies whether to create standby instances for the DB shard group. Valid
	// values are the following:
	//   - 0 - Creates a single, primary DB instance for each physical shard. This is
	//   the default value, and the only one supported for the preview.
	//   - 1 - Creates a primary DB instance and a standby instance in a different
	//   Availability Zone (AZ) for each physical shard.
	//   - 2 - Creates a primary DB instance and two standby instances in different
	//   AZs for each physical shard.
	ComputeRedundancy *int32

	// The name of 
    
func (c *Client) addOperationDeleteDBShardGroupMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsquery_serializeOpDeleteDBShardGroup{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsquery_deserializeOpDeleteDBShardGroup{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "DeleteDBShardGroup"); 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 = addOpDeleteDBShardGroupValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDeleteDBShardGroup(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
}