docs: public final CommitResponse commit(
        SessionName session, TransactionOptions singleUseTransaction, List<Mutation> mutations) {
  
      CommitRequest request =
          CommitRequest.newBuilder()
              .setSession(session == null ? null : session.toString())
              .setSingleUseTransaction(singleUseTransaction)
              .addAllMutations(mutations)
              .build();
      return commit(request);
    }