Custom Action Type Property и Kotlin

Вопросы и проблемы
#1

Добрый день!
Делали свой Action Type и натолкнулись на следующее: если используем kotlin, то не видны наши properties. На java все нормально.
Так на java:

package com.company.myactionwithjava.app;

import io.jmix.ui.action.ActionType;
import io.jmix.ui.action.ItemTrackingAction;
import io.jmix.ui.meta.StudioAction;
import io.jmix.ui.meta.StudioPropertiesItem;
import io.jmix.ui.component.Component;

@StudioAction(target = "io.jmix.ui.component.ListComponent", description = "Uses for test")
@ActionType("myAction")
public class MyAction <E> extends ItemTrackingAction {
    private String myString = "This is my string";

    @StudioPropertiesItem(required = true, defaultValue = "This is my string")
    public void setMyString(String myString) {
        this.myString = myString;
    }

    @Override
    public void actionPerform(Component component) {
        if (!hasSubscriptions(ActionPerformedEvent.class)) {
            execute();
        } else {
            super.actionPerform(component);
        }
    }

    public void execute() {
        System.out.println("It's just a test: " + myString);
    }
}

Свойство видно:
image

А так на котлин:

package com.company.actionnoproperties.app

import io.jmix.ui.action.Action
import io.jmix.ui.action.ActionType
import io.jmix.ui.action.ItemTrackingAction
import io.jmix.ui.meta.StudioAction
import io.jmix.ui.meta.StudioPropertiesItem
import io.jmix.ui.component.Component

@StudioAction(target = ["io.jmix.ui.component.ListComponent"], description = "Uses for test")
@ActionType("myAction")
class MyAction<E>: ItemTrackingAction() {

    private var myString = "This is my string"

    @StudioPropertiesItem(required = true, defaultValue = "This is my string")
    fun setMyString(myString: String) {
        this.myString = myString
    }

    @Override
    override fun actionPerform(component: Component) {
        if (!hasSubscriptions(Action.ActionPerformedEvent::class.java)) {
            execute()
        } else {
            super.actionPerform(component)
        }
    }

    private fun execute() {
        println("It's just a test: $myString")
    }
}

Свойства нет:
image

Подскажите, пожалуйста, что мы делаем не так