/**
* Pre-generate enough keys to reach the lookahead size. You can call this if you need to
* explicitly invoke the lookahead procedure, but it's normally unnecessary as it will be done
* automatically when needed.
*/
public void maybeLookAhead() {
lock.lock();
try {
List<DeterministicKey> keys = maybeLookAhead(externalKey, issuedExternalKeys);
keys.addAll(maybeLookAhead(internalKey, issuedInternalKeys));
// Batch add all keys at once so there's only one event listener invocation, as this will be
// listened to
// by the wallet and used to rebuild/broadcast the Bloom filter. That's expensive so we don't
// want to do
// it more often than necessary.
basicKeyChain.importKeys(keys);
} finally {
lock.unlock();
}
}
