void canCommit(final DataTreeCandidate tip) throws ExecutionException, TimeoutException {
Collection<CanCommit> messages = registry.createCanCommitMessages(txId, tip, schema);
// FIXME: Optimize empty collection list with pre-created futures, containing success.
void canCommit(final DataTreeCandidate tip) throws ExecutionException, TimeoutException {
Collection<CanCommit> messages = registry.createCanCommitMessages(txId, tip, schema);
// FIXME: Optimize empty collection list with pre-created futures, containing success.