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

package guardduty

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

// Retrieves an Amazon GuardDuty detector specified by the detectorId. There might
// be regional differences because some data sources might not be available in all
// the Amazon Web Services Regions where GuardDuty is presently supported. For more
// information, see Regions and endpoints (https://docs.aws.amazon.com/guardduty/latest/ug/guardduty_regions.html)
// .
func (c *Client) GetDetector(ctx context.Context, params *GetDetectorInput, optFns ...func(*Options)) (*GetDetectorOutput, error) {
	if params == nil {
		params = &GetDetectorInput{}
	}

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

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

type GetDetectorInput struct {

	// The unique ID of the detector that you want to get.
	//
	// This member is required.
	DetectorId *string

	noSmithyDocumentSerde
}

type GetDetectorOutput struct {

	// The GuardDuty service role.
	//
	// This member is required.
	ServiceRole *string

	// The detector status.
	//
	// This member is required.
	Status types.DetectorStatus

	// The timestamp of when the detector was created.
	CreatedAt *string

	// Describes which data sources are enabled for the detector.
	//
	// Deprecated: This parameter is deprecated, use Features instead
	DataSources *types.DataSourceConfigurationsResult

	// Describes the features that have been enabled for the detector.
	Features []types.DetectorFeatureConfigurationResult

	// The publishing frequency of the finding.
	FindingPublishingFrequency types.FindingPublishingFrequency

	//
    
func (c *Client) addOperationGetDetectorMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsRestjson1_serializeOpGetDetector{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestjson1_deserializeOpGetDetector{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "GetDetector"); 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 = addOpGetDetectorValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opGetDetector(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
}