A generic class that contains data and status about loading this data.

Resource.kt

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

enum class Status {
    SUCCESS,
    ERROR,
    LOADING
}

omg, examples in java is better