package us.shandian.giga.get; import android.support.annotation.NonNull; public class FinishedMission extends Mission { public FinishedMission() { } public FinishedMission(@NonNull DownloadMission mission) { source = mission.source; length = mission.length;// ¿or mission.done? timestamp = mission.timestamp; kind = mission.kind; storage = mission.storage; } }