}
public void testUnion() {
String formula = "Sheet1!$B$2:$C$3,OFFSET(Sheet1!$E$2:$E$4,1,Sheet1!$A$1),Sheet1!$D$6";
HSSFWorkbook wb = new HSSFWorkbook();
wb.createSheet("Sheet1");
Ptg[] ptgs = FormulaParser.parse(formula, HSSFEvaluationWorkbook.create(wb), FormulaType.CELL, -1);
confirmTokenClasses(ptgs,
// TODO - AttrPtg.class, // Excel prepends this
MemFuncPtg.class,