IntelliJ autocomplete with ThymeLeaf, Kotlin, ModelAndView and mapOf?

I have this controller:

@Controller
class MainController(
        val performanceRepository: PerformanceRepository
) {
    @RequestMapping("")
    fun homePage() = ModelAndView("seatBooking", mapOf(
            "performances" to performanceRepository.findAll(),
            "seatNums" to 1..10,
            "seatRows" to 'A'..'F',
            "bean" to CheckAvailabilityBackingBean()))
}

I want to use the bean variable in the template, but IntelliJ in editing time, is not recognizing anyone variable from the map, as is ThymeLeaf with Kotlin and IntelliJ autocomplete is not working when the payload sent to the template is a map with the previous syntax.

is there any way to do the previus code work in editing time?