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

package ssoadmin

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

// Lists the assignee of the specified Amazon Web Services account with the
// specified permission set.
func (c *Client) ListAccountAssignments(ctx context.Context, params *ListAccountAssignmentsInput, optFns ...func(*Options)) (*ListAccountAssignmentsOutput, error) {
	if params == nil {
		params = &ListAccountAssignmentsInput{}
	}

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

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

type ListAccountAssignmentsInput struct {

	// The identifier of the Amazon Web Services account from which to list the
	// assignments.
	//
	// This member is required.
	AccountId *string

	// The ARN of the IAM Identity Center instance under which the operation will be
	// executed. For more information about ARNs, see Amazon Resource Names (ARNs) and
	// Amazon Web Services Service Namespaces in the Amazon Web Services General
	// Reference.
	//
	// This member is required.
	InstanceArn *string

	// The ARN of the permission set from which to list assignments.
	//
	// This member is required.
	PermissionSetArn *string

	// The maximum number 
    
func (c *Client) addOperationListAccountAssignmentsMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpListAccountAssignments{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpListAccountAssignments{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "ListAccountAssignments"); 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 = addOpListAccountAssignmentsValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opListAccountAssignments(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
}