UserRepositoryDriver.kt

fun main() {
    val user = User("Abhishek Saxena")
    
    val fakeUserDataSource = FakeUserDataSource()
    val userRepositoryWithFakeDataSource = UserRepository(fakeUserDataSource)
    userRepositoryWithFakeDataSource.save(user) // Calling save in fake data source.

    val remoteUserDataSource = RemoteUserDataSource()
    val userRepositoryWithRemoteDataSource = UserRepository(remoteUserDataSource)
    userRepositoryWithRemoteDataSource.save(user) // Calling save in remote data source.
}