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

package proton

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

// Update the service pipeline. There are four modes for updating a service
// pipeline. The deploymentType field defines the mode. NONE In this mode, a
// deployment doesn't occur. Only the requested metadata parameters are updated.
// CURRENT_VERSION In this mode, the service pipeline is deployed and updated with
// the new spec that you provide. Only requested parameters are updated. Don’t
// include major or minor version parameters when you use this deployment-type .
// MINOR_VERSION In this mode, the service pipeline is deployed and updated with
// the published, recommended (latest) minor version of the current major version
// in use, by default. You can specify a different minor version of the current
// major version in use. MAJOR_VERSION In this mode, the service pipeline is
// deployed and updated with the published, recommended (latest) major and minor
// version of the current template by default. You can specify a different major
// version that's higher than the major version in use and a minor version.
func (c *Client) UpdateServicePipeline(ctx context.Context, params *UpdateServicePipelineInput, optFns ...func(*Options)) (*UpdateServicePipelineOutput, error) {
	if params == nil {
		params = &UpdateServicePipelineInput{}
	}

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

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

type UpdateServicePipelineInput struct {

	// The deployment type. There are four modes for updating a service pipeline. The
	// deploymentType field defines the mode. NONE In this mode, a deployment doesn't
	// occur. Only the requested metadata parameters are updated. CURRENT_VERSI
    
func (c *Client) addOperationUpdateServicePipelineMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson10_serializeOpUpdateServicePipeline{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson10_deserializeOpUpdateServicePipeline{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "UpdateServicePipeline"); 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 = addOpUpdateServicePipelineValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opUpdateServicePipeline(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
}