gistfile1.txt

actor Main
  new create(env: Env) => None


trait MyTrait
  new create()
  fun test(): MyTrait


class Foo is MyTrait
  new create() => None
  fun test(): Foo => Foo


class GenericTest[T: MyTrait ref]
  fun test() =>
    let a = Array[MyTrait]
    a.push(T.create().test())