Get class from generic in Kotlin

Question

In my Kotlin project, I have the following class:

class NewTest {
    @Rule
    @JvmField
    var activityTestRule: ActivityTestRule<NewActivity> =
        ActivityTestRule(NewActivity::class.java, false, false)
    .....
}

as the activity rule will be used in most of my test, I decided to write something like:

class BaseTestClass<T> {
    @Rule
    @JvmField
    var activityTestRule: ActivityTestRule<T> =
        ActivityTestRule(T::class.java, false, false)
    .....
}

but this is not working. Any idea is it possible at all?