code: public ReduceBy to(JcValue value) {
  		CollectExpression collXpr = (CollectExpression)this.astNode;
  		ReduceEvalExpression reduceEval = (ReduceEvalExpression)(collXpr).getEvalExpression();
  		reduceEval.setResultVariable(value);
  		return new ReduceBy(collXpr);
  	}
docs: <div color='red' style="font-size:24px;color:red"><b><i><u>JCYPHER</u></i></b></div>
  <div color='red' style="font-size:18px;color:red"><i>specify the accumulator variable of a REDUCE expression.
  <div color='red' style="font-size:18px;color:red"><i>e.g. ...REDUCE()<br/>.fromAll(n).IN_nodes(p)<br/>.<b>to(totalAge)</b><br/>.by(totalAge.plus(n.numberProperty("age")))<br/>.startWith(0)</i></div>
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