Trait implicit chunks

trait Ok[R] {}
trait QV_StorableTest[R] {
    def method(implicit rok: Ok[R]): String
}
object testTuples {
    implicit val IntInt = new Ok[(Int, Int)] {}
    implicit val DoubleInt = new Ok[(Double, Int)] {}
}
trait TestTrait[R] extends QV_StorableTest[R]{
    val prefix: String = "test"
    def method(implicit rok: Ok[R]): String = "test"
}
object testObject extends TestTrait[(String, String)]