How to unmarshal raw CSV response into a struct?

I have a body response that I can only get Byte responses. This bytes encode a csv-like response. Something like:

element_a,element_b,element_c
cooper,claus,active
carlos,saldanha,inactive
robert,jesus,active

Lets say then that I have the struct that looks like this:

type ESResponse struct {
ElementA string `csv:"element_a"`
ElementB string `csv:"element_b"`
ElementC string `csv:"element_c"`
}

I would like to unmarshal the byte response so then I'm able to access its elements.

What I've been doing is the following:

var actualResult ESResponse

body := util.GetResponseBody() // this is where the byte response comes from. 
in := string(body[:]) // here I transform it to a string but I trully think this is not the best way. 
err = gocsv.Unmarshal(in, &actualResult)

I've been using this library here: https://pkg.go.dev/github.com/gocarina/gocsv#section-readme but I'm unable to understand the error I get which is:

cannot use in (variable of type string) as io.Reader value in argument to gocsv.Unmarshal: string does not implement io.Reader (missing method Read)

It means, that in argument must implement interface io.Reader, but you argument's type is string, which doesn't. So if you want to deserialize value from string, you can do this:

	body := `
element_a,element_b,element_c
cooper,claus,active
carlos,saldanha,inactive
robert,jesus,active`
	var actualResult []ESResponse
	in := strings.NewReader(body)
	err := gocsv.Unmarshal(in, &actualResult)

or gocsv.Unmarshal(bytes.NewReader([]byte(body)), &actualResult) to deserialize from bytes array