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

package sfn

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

// Lists aliases (https://docs.aws.amazon.com/step-functions/latest/dg/concepts-state-machine-alias.html)
// for a specified state machine ARN. Results are sorted by time, with the most
// recently created aliases listed first. To list aliases that reference a state
// machine version (https://docs.aws.amazon.com/step-functions/latest/dg/concepts-state-machine-version.html)
// , you can specify the version ARN in the stateMachineArn parameter. If nextToken
// is returned, there are more results available. The value of nextToken is a
// unique pagination token for each page. Make the call again using the returned
// token to retrieve the next page. Keep all other arguments unchanged. Each
// pagination token expires after 24 hours. Using an expired pagination token will
// return an HTTP 400 InvalidToken error. Related operations:
//   - CreateStateMachineAlias
//   - DescribeStateMachineAlias
//   - UpdateStateMachineAlias
//   - DeleteStateMachineAlias
func (c *Client) ListStateMachineAliases(ctx context.Context, params *ListStateMachineAliasesInput, optFns ...func(*Options)) (*ListStateMachineAliasesOutput, error) {
	if params == nil {
		params = &ListStateMachineAlia
    
func (c *Client) addOperationListStateMachineAliasesMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson10_serializeOpListStateMachineAliases{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson10_deserializeOpListStateMachineAliases{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "ListStateMachineAliases"); 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 = addOpListStateMachineAliasesValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListStateMachineAliases(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
}