import org.opendaylight.yangtools.concepts.Immutable;
public abstract class Envelope<T extends Message<?, ?>> implements Immutable, Serializable {
private static final long serialVersionUID = 1L;
import org.opendaylight.yangtools.concepts.Immutable;
public abstract class Envelope<T extends Message<?, ?>> implements Immutable, Serializable {
private static final long serialVersionUID = 1L;