traitで子のプロパティなど参照したいとき

CakePattern.scala

    abstract class Interface(_id: Int) {
      def id: Int = _id
    }
    
    trait Like {
      self : Interface =>
        def get: Int = this.id
    }
    
    trait Param {
      self : Interface =>
    }
    
    case class A(_id: Int) extends Interface(_id: Int) with Like with Param {
      
    }
    println(A(1).id)