code: public CFrom<CTerminal> valueOf(JcValue expression) {
  		CollectExpression collXpr = (CollectExpression)this.astNode;
  		((ExtractEvalExpression)collXpr.getEvalExpression())
  				.setExpression(expression);
  		
  		CFrom<CTerminal> ret = new CFrom<CTerminal>(collXpr, new CTerminal(collXpr));
  		return ret;
  	}
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 value for an extract expression</i></div>
  <div color='red' style="font-size:18px;color:red"><i>e.g. ...EXTRACT().<b>valueOf(n.property("name"))</b>.fromAll(n).IN(nds)</i></div>
  <br/>