val stealDummyString = Intercept(
        r => "dummy".success[NonEmptyList[String]],
        (err, v:Failure[NonEmptyList[String], String]) => BadRequest(v.e.list.mkString("\n"))
    )


    def dummy = (stealUserName compose stealDummyString) {case usernameDummy =>
        Action {
            Ok(usernameDummy)
        }
    }