LSP.kt

import java.util.Date

interface Product {
    val name: String
}

interface FoodProduct: Product {
    val expiredDate: Date
}

class Banana: FoodProduct {
    override val name: String = "Sweet Banana"
    override val expiredDate = Date()
}

class Shoes: Product {
    override val name: String = "Black Shoes"
}

fun main() {
    val banana = Banana()
    println(banana.name)
    println(banana.expiredDate)
    
    val shoes = Shoes()
    println(shoes.name)
}

no-LSP.kt

import java.util.Date

interface Product {
    val name: String
    val expiredDate: Date
}

class Banana: Product {
    override val name: String = "Sweet Banana"
    override val expiredDate = Date()
}

class Shoes: Product {
    override val name: String = "Air Jordan"
    override val expiredDate = Date() /// Expired date? 
}

fun main() {
    val banana = Banana()
    println(banana.name)
    println(banana.expiredDate)
}