JavaFX Property "Bean" Implemented in Kotlin

gistfile1.kt

class KotlinClass() {
    private val _nickName: ObjectProperty<String> = SimpleObjectProperty("")
    var nickName: String
        get() = _nickName.get()
        set(value) = _nickName.set(value)

    fun nickNameProperty() = _nickName
}

fun main(args: Array<String>) {
    val testClass = KotlinClass()
    testClass.nickName = "Shorty"
    println("Nickname: ${testClass.nickName}")
    println("Property: " + testClass.nickNameProperty())
}