public void updateBy(String outputTableId, Expression onUpdateExpression) {

        onDemandQuery.updateBy(outputTableId, onUpdateExpression);
    }
Method to set an updateStream as the outputStream of the store query

@param outputTableId      id of the table which is going to be queried
@param onUpdateExpression expression for the update operation defined in the store query
modules/siddhi-query-api/src/main/java/io/siddhi/query/api/execution/query/StoreQuery.java