WorkbookDependentFormula optg = (WorkbookDependentFormula) ptg;
stack.push(optg.toFormulaString(book));
continue;
}
if (! (ptg instanceof OperationPtg)) {
stack.push(ptg.toFormulaString());
continue;
}
OperationPtg o = (OperationPtg) ptg;
String[] operands = getOperands(stack, o.getNumberOfOperands());