+package basic;
+import org.simgrid.msg.HostFailureException;
+import org.simgrid.msg.Msg;
+import org.simgrid.msg.Task;
+import org.simgrid.msg.TaskCancelledException;
+import org.simgrid.msg.TimeoutException;
+import org.simgrid.msg.TransferFailureException;
+import org.simgrid.msg.Process;