Inheritance for multi module project in kotlin, android

ModularInheritance.kt

import kotlinx.coroutines.*

fun main() { 
    BaseAPIImpl().endpoint1()
    ModuleAPIImpl().endpoint1()
    ModuleAPIImpl().endpoint2()
  
    (ModuleAPIImpl() as ModuleAPI).endpoint1()
    (ModuleAPIImpl() as ModuleAPI).endpoint2()
}

interface BaseAPI{
    fun endpoint1()
}

open class BaseAPIImpl: BaseAPI{
    override fun endpoint1(){
        println("BaseAPIImpl endpoint1")
    }
}

interface ModuleAPI :BaseAPI {
    fun endpoint2()
}

class ModuleAPIImpl : BaseAPIImpl(), ModuleAPI{
    override fun endpoint2(){
        println("ModuleAPIImpl endpoint2")
    }
}