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

package servicecatalogappregistry

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"
)

// Disassociates an attribute group from an application to remove the extra
// attributes contained in the attribute group from the application's metadata.
// This operation reverts AssociateAttributeGroup .
func (c *Client) DisassociateAttributeGroup(ctx context.Context, params *DisassociateAttributeGroupInput, optFns ...func(*Options)) (*DisassociateAttributeGroupOutput, error) {
	if params == nil {
		params = &DisassociateAttributeGroupInput{}
	}

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

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

type DisassociateAttributeGroupInput struct {

	// The name, ID, or ARN of the application.
	//
	// This member is required.
	Application *string

	// The name, ID, or ARN of the attribute group that holds the attributes to
	// describe the application.
	//
	// This member is required.
	AttributeGroup *string

	no
    
func (c *Client) addOperationDisassociateAttributeGroupMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsRestjson1_serializeOpDisassociateAttributeGroup{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpDisassociateAttributeGroup{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "DisassociateAttributeGroup"); 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 = addOpDisassociateAttributeGroupValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDisassociateAttributeGroup(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
}