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: defaultsmode.go
    path of file: ./repos/teller/vendor/github.com/aws/aws-sdk-go-v2/aws
    
    the code of the file until where you have to start completion: // Code generated by github.com/aws/aws-sdk-go-v2/internal/codegen/cmd/defaultsmode. DO NOT EDIT.

package aws

import (
	"strings"
)

// DefaultsMode is the SDK defaults mode setting.
type DefaultsMode string

// The DefaultsMode constants.
const (
	// DefaultsModeAuto is an experimental mode that builds on the standard mode.
	// The SDK will attempt to discover the execution environment to determine the
	// appropriate settings automatically.
	//
	// Note that the auto detection is heuristics-based and does not guarantee 100%
	// accuracy. STANDARD mode will be used if the execution environment cannot
	// be determined. The auto detection might query EC2 Instance Metadata service
	
    
func (d *DefaultsMode) SetFromString(v string) (ok bool) {
	switch {
	case strings.EqualFold(v, string(DefaultsModeAuto)):
		*d = DefaultsModeAuto
		ok = true
	case strings.EqualFold(v, string(DefaultsModeCrossRegion)):
		*d = DefaultsModeCrossRegion
		ok = true
	case strings.EqualFold(v, string(DefaultsModeInRegion)):
		*d = DefaultsModeInRegion
		ok = true
	case strings.EqualFold(v, string(DefaultsModeLegacy)):
		*d = DefaultsModeLegacy
		ok = true
	case strings.EqualFold(v, string(DefaultsModeMobile)):
		*d = DefaultsModeMobile
		ok = true
	case strings.EqualFold(v, string(DefaultsModeStandard)):
		*d = DefaultsModeStandard
		ok = true
	case len(v) == 0:
		*d = DefaultsModeLegacy
		ok = true
	default:
		*d = DefaultsMode(v)
	}
	return ok
}