vitamon

import akka.actor.Cancellable;
import akka.actor.Scheduler;
import scala.concurrent.ExecutionContext;
import scala.concurrent.Future;
import scala.concurrent.Promise;
import scala.concurrent.duration.FiniteDuration;

import java.util.concurrent.Callable;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicReference;