docs: CompletableFuture<Collection<Xid>> fetchPreparedTransactions() {
        try {
           TransactionOperationFactory factory = assertStartedAndReturnFactory();
           return factory.newRecoveryOperation().execute();
        } catch (Exception e) {
           if (isTraceLogEnabled()) {
              getLog().trace("Exception while fetching prepared transactions", e);
           }
           return CompletableFuture.completedFuture(Collections.emptyList());
        }
     }