How can I write a function in Golang which takes multiple types as a parameter?

I am trying to write a function in Golang which will serialize a map and a slice (convert it to a string). I want it to take one parameter but I am unsure of how to make it accept a map and a slice only. I know I can use something like the following function but beyond this point I am confused. I am still trying to wrap my head around interfaces.

func Serialize(data interface{}) string {
	return ""
}

It is preferred if I don't need to create my own struct for it. An explanation of how I could allow this Serialize function to accept maps and structs would be hugely appreciated.

You could simply use fmt.Sprintf for this:

type foo struct {
	bar  string
	more int
}

func main() {
	s := []string{"a", "b", "c"}
	fmt.Println(Serialize(s))

	m := map[string]string{"a": "a", "b": "b"}
	fmt.Println(Serialize(m))

	t := foo{"x", 7}    
	fmt.Println(Serialize(t))
}

func Serialize(data interface{}) string {
	str := fmt.Sprintf("%v", data)
	return str
}

This will print:

[a b c]

map[b:b a:a]

{x 7}

You can easily trim off the {}, [] and map[] if desired/required with strings.TrimSuffix and strings.TrimPrefix