serialize method
Serialize.
Implementation
@override
void serialize(List<int> buffer) {
// Write type-id 0x1fad68cd.
buffer.writeInt32(0x1fad68cd);
// Write fields.
buffer.writeInt64(id);
buffer.writeDateTime(date);
buffer.writeInt64(userId);
buffer.writeObject(action);
// Finished serialization.
}