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

package customerprofiles

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

// Returns a set of profiles that belong to the same matching group using the
// matchId or profileId . You can also specify the type of matching that you want
// for finding similar profiles using either RULE_BASED_MATCHING or
// ML_BASED_MATCHING .
func (c *Client) GetSimilarProfiles(ctx context.Context, params *GetSimilarProfilesInput, optFns ...func(*Options)) (*GetSimilarProfilesOutput, error) {
	if params == nil {
		params = &GetSimilarProfilesInput{}
	}

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

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

type GetSimilarProfilesInput struct {

	// The unique name of the domain.
	//
	// This member is required.
	DomainName *string

	// Specify the type of matching to get similar profiles for.
	//
	// This member is required.
	MatchType types.MatchType

	// The string indicating the search key to be used.
	//
	// This member is required.
	SearchKey *string

	// The string based on SearchKey to be searched for simi
    
func (c *Client) addOperationGetSimilarProfilesMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsRestjson1_serializeOpGetSimilarProfiles{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpGetSimilarProfiles{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "GetSimilarProfiles"); 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 = addOpGetSimilarProfilesValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetSimilarProfiles(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
}