Example of sealed class for managing an API response

NetworkResponse.kt

sealed class NetworkResponse<T>(
    val data: T? = null,
    val message: String? = null
) {
    class Success<T>(data: T) : NetworkResponse<T>(data)
    
    class Error<T>(message: String?, data: T? = null) : NetworkResponse<T>(data, message)
    
    class Loading<T> : NetworkResponse<T>()
}