+ interface SerialForm<T extends Message<?, ?>, E extends Envelope<T>> extends Externalizable {
+
+ @NonNull E envelope();
+
+ void setEnvelope(@NonNull E envelope);
+
+ @java.io.Serial
+ Object readResolve();
+
+ @Override
+ default void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
+ final byte header = WritableObjects.readLongHeader(in);
+ final var sessionId = WritableObjects.readFirstLong(in, header);
+ final var txSequence = WritableObjects.readSecondLong(in, header);
+ @SuppressWarnings("unchecked")
+ final var message = (T) in.readObject();
+ setEnvelope(readExternal(in, sessionId, txSequence, message));
+ }
+
+ E readExternal(ObjectInput in, long sessionId, long txSequence, T message) throws IOException;
+
+ @Override
+ default void writeExternal(final ObjectOutput out) throws IOException {
+ writeExternal(out, envelope());
+ }
+
+ default void writeExternal(final ObjectOutput out, final @NonNull E envelope) throws IOException {
+ WritableObjects.writeLongs(out, envelope.getSessionId(), envelope.getTxSequence());
+ out.writeObject(envelope.getMessage());
+ }
+ }
+
+ @java.io.Serial