serialize method
Implementation
void serialize(Serializer serializer) {
multisigAddress.serialize(serializer);
// Options are encoded with an extra u8 field before the value - 0x0 is none and 0x1 is present.
// We use serializeBool below to create this prefix value.
if (transactionPayload == null) {
serializer.serializeBool(false);
} else {
serializer.serializeBool(true);
transactionPayload!.serialize(serializer);
}
}