import java.util.*
 
fun main(args: Array<String>) {
    
}

 class Type1(
    val property1: String) : User()
{
    val property2: String = ""
}

 class Type2(
    val property1: String) : User()
{
    val property2: String = ""
}

open class User {
    
    val Id: Long = 0

    val username:String = ""

    val password:String = ""
}

interface JpaRepository<Object,Long> {}

interface UserRepository<User, Long>: JpaRepository<User, Long> {
    fun getUserByUsername(username: String)
}

interface Type1Repository: UserRepository<Type1, Long> {}