docs: public TransactionWriteRequest addUpdate(Object object,
                                               DynamoDBTransactionWriteExpression transactionWriteExpression,
                                               ReturnValuesOnConditionCheckFailure returnValuesOnConditionCheckFailure) {
          transactionWriteOperations.add(new TransactionWriteOperation(object, TransactionWriteOperationType.Update, transactionWriteExpression, returnValuesOnConditionCheckFailure));
          return this;
      }