Forked idea from https://github.com/square/dagger/tree/master/examples/simple/src/main/java/coffee

CoffeeMaker.kt

interface Heater {
    fun on()
    fun off()
    fun isHot() : Boolean
}

class ElectricHeater(var heating: Boolean = false) : Heater {
    override fun on() {
        println("~ ~ ~ heating ~ ~ ~")
        heating = true
    }

    override fun off() {
        heating = false
    }

    override fun isHot() : Boolean {
        return heating
    }
}

interface Pump {
    fun pump()
}

class Thermosiphon(heater: Heater) : Pump, Heater by heater {
    override fun pump() {
        if (isHot()) {
            println("=> => pumping => =>");
        }
    }
}

interface CoffeeModule {
    fun getThermosiphon() : Thermosiphon
}

class MyDripCoffeeModule : CoffeeModule {
    companion object {
        val electricHeater: ElectricHeater by lazy {
            ElectricHeater()
        }
    }

    private val _thermosiphon : Thermosiphon by lazy {
        Thermosiphon(electricHeater)
    }
    
    override fun getThermosiphon() : Thermosiphon = _thermosiphon
}

class CoffeeMaker(val coffeeModule: CoffeeModule) {
    fun brew() {
        coffeeModule.getThermosiphon().run {
            on()
            pump()
            println(" [_]P coffee! [_]P ")
            off()
        }
    }
}

fun main(args: Array<String>) {
    val coffeeMaker = CoffeeMaker(MyDripCoffeeModule())

    coffeeMaker.brew();
}