import com.google.common.base.Preconditions;
import java.util.concurrent.TimeoutException;
import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshot;
import com.google.common.base.Preconditions;
import java.util.concurrent.TimeoutException;
import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshot;