fun main(args: Array<String>) {
    val primary = Primary("Doe")
    val primaryCon = PrimaryConstructor("John")
    primary.testCall()
    primaryCon.testCall()
}

class Primary constructor(val firstName: String) {
    fun testCall() {
        println("First Name : $firstName")
    }
}

class PrimaryConstructor(val firstName: String) {
    fun testCall() {
        println("First Name : $firstName")
    }
}