code: public static CaseTerminal perform() {
  		CaseExpression cx = new CaseExpression();
  		CaseTerminal ret = CaseFactory.createCaseTerminal(cx);
  		cx.setClauseType(ClauseType.ELSE);
  		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>last part of a CASE expression</i></div>
  <br/>WHEN...
  <br/>ELSE.perform() ...</b></i></div>
  <br/>