serialize method
Serialize.
Implementation
@override
void serialize(List<int> buffer) {
// Write type-id 0x204d3878.
buffer.writeInt32(0x204d3878);
// Write fields.
buffer.writeInt64(randomId);
buffer.writeInt32(ttl);
buffer.writeString(message);
buffer.writeObject(media);
// Finished serialization.
}