create method
Implementation
@override
Future<PairingCreated> create() async {
_isInitialized();
final symKey = generateRandomBytes32();
final topic = await core.crypto.setSymKey(symKey: symKey);
final expiry = calcExpiry(ttl: FIVE_MINUTES);
final relay = RelayerProtocolOptions(protocol: RELAYER_DEFAULT_PROTOCOL);
final pairing = PairingStruct(
topic: topic,
expiry: expiry,
relay: relay,
active: false,
);
final uri = formatUri(EngineUriParameters(
protocol: core.protocol,
version: core.version,
topic: topic,
symKey: symKey,
relay: relay,
));
await pairings.set(topic, pairing);
await core.relayer.subscribe(topic: topic);
core.expirer.set(topic, expiry);
return PairingCreated(topic: topic, uri: uri);
}