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_CreateDBClusterEndpoint.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/aws-sdk-go-v2/service/rds/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Creates a new custom endpoint and associates it with an Amazon Aurora DB
// cluster. This action applies only to Aurora DB clusters.
func (c *Client) CreateDBClusterEndpoint(ctx context.Context, params *CreateDBClusterEndpointInput, optFns ...func(*Options)) (*CreateDBClusterEndpointOutput, error) {
	if params == nil {
		params = &CreateDBClusterEndpointInput{}
	}

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

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

type CreateDBClusterEndpointInput struct {

	// The identifier to use for the new endpoint. This parameter is stored as a
	// lowercase string.
	//
	// This member is required.
	DBClusterEndpointIdentifier *string

	// The DB cluster identifier of the DB cluster associated with the endpoint. This
	// parameter is stored as a lowercase string.
	//
	// This member is required.
	DBClusterIdentifier *string

	// The type of the endpoint, one of: READER , WRITER , ANY .
	//
	// This member is required.
	EndpointType *string

	// List of DB instance identifiers that aren't part of the custom endpoint group.
	// All other eligible instances are reachable through the custom endpoint. This
	// parameter is relevant
    
func (c *Client) addOperationCreateDBClusterEndpointMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsquery_serializeOpCreateDBClusterEndpoint{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsquery_deserializeOpCreateDBClusterEndpoint{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "CreateDBClusterEndpoint"); 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 = addOpCreateDBClusterEndpointValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opCreateDBClusterEndpoint(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
}