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: default_store.go
    path of file: ./repos/ko/vendor/github.com/docker/cli/cli/config/credentials
    
    the code of the file until where you have to start completion: package credentials

import (
	exec "golang.org/x/sys/execabs"
)

// DetectDefaultStore return the default credentials store for the platform if
// the store executable is available.
func DetectDe
    
func DetectDefaultStore(store string) string {
	platformDefault := defaultCredentialsStore()

	// user defined or no default for platform
	if store != "" || platformDefault == "" {
		return store
	}

	if _, err := exec.LookPath(remoteCredentialsPrefix + platformDefault); err == nil {
		return platformDefault
	}
	return ""
}