Pring the key/value types of a Golang map

I am trying to print the type of a map, eg: map[int]string

func handleMap(m reflect.Value) string {

    keys := m.MapKeys()
    n := len(keys)

    keyType := reflect.ValueOf(keys).Type().Elem().String()
    valType := m.Type().Elem().String()

    return fmt.Sprintf("map[%s]%s>", keyType, valType)
}

so if I do:

log.Println(handleMap(make(map[int]string)))

I want to get "map[int]string"

but I can't figure out the right calls to make.