// TODO : a cell with fields is ignored for deep cloning
// this leads to problems with fields containing mixed
// content fields and formulas, so we have to fix this
IFormulaService formulaService = cell.getFormulaService();
if (formulaService != null) {
IFormula formula = formulaService.getFormula();
if (formula != null) {
this.cellFormula = formula.getExpression();
}
}
}