docs: public TransactionWriteRequest addDelete(Object key,
                                               DynamoDBTransactionWriteExpression transactionWriteExpression,
                                               ReturnValuesOnConditionCheckFailure returnValuesOnConditionCheckFailure ) {
          transactionWriteOperations.add(new TransactionWriteOperation(key, TransactionWriteOperationType.Delete, transactionWriteExpression, returnValuesOnConditionCheckFailure));
          return this;
      }