serialize method
Serialize.
Implementation
@override
void serialize(List<int> buffer) {
// Write type-id 0xa44f3ef6.
buffer.writeInt32(0xa44f3ef6);
// Write fields.
buffer.writeObject(geo);
buffer.writeInt32(zoom);
buffer.writeInt32(w);
buffer.writeInt32(h);
buffer.writeObject(caption);
// Finished serialization.
}