no-srp.kt

class Repository(){
    fun getData(): String {
        return dataSource()
    }
    
    fun dataSource(): String {
        return "data from datasource!"
    }
}

fun main() {
    val repo = Repository()
    println(repo.dataSource())
}

srp.kt

class DataSource(){
    fun getData(): String {
        return "SRP - data from datasource!"
    }
}

class Repository(private val datasource: DataSource){
    fun getData(): String {
        return datasource.getData()
    }
}

fun main() {
    val datasource = DataSource()
    val repo = Repository(datasource)
    println(repo.getData())
}