serialize method
Serialize.
Implementation
@override
void serialize(List<int> buffer) {
// Write type-id 0xffadc913.
buffer.writeInt32(0xffadc913);
// Write fields.
buffer.writeInt32(flags);
buffer.writeInt32(id);
buffer.writeDateTime(date);
buffer.writeDateTime(expireDate);
// Finished serialization.
}