assertNotNull(countFA);
assertEquals("COUNT(Sheet1:Sheet3!$A$1:$B$2)", countFA.getCellFormula());
// Create a formula parser
FormulaParsingWorkbook fpb = null;
if (wb instanceof HSSFWorkbook)
fpb = HSSFEvaluationWorkbook.create((HSSFWorkbook)wb);
else
fpb = XSSFEvaluationWorkbook.create((XSSFWorkbook)wb);