class ClassOne { }

class ClassTwo (val arg: Int) {
    val x: Int = 3
}

abstract class ClassThree {
    abstract fun foo(arg: Int)
}

open class ClassFour: ClassThree() {
    override fun foo(arg: Int) {
    }
}

class ClassFive: ClassFour() {
}

interface IF1 {
    fun funIF1() {}
}

interface IF2 {
    fun funIF2() {}
}

class ClassSix(): ClassFour(), IF1, IF2 {
    constructor(i: Int): this(){ }
}

fun f(s: String) {}

class ClassSeven {
    constructor(i: String) {
        f(i)
    }
    init {
        f("init1")
    }

    val x: Int = 3

    init {
        f("init2")
    }
}

enum class Direction {
    NORTH, SOUTH, WEST, EAST
}

enum class Color(val rgb: Int) {
    RED(0xFF0000),
    GREEN(0x00FF00),
    BLUE(0x0000FF)
}