private void fillFormula(CellWriteHandlerContext cellWriteHandlerContext, FormulaData formulaData) {
        if (formulaData == null) {
            return;
        }
        Cell cell = cellWriteHandlerContext.getCell();
        if (formulaData.getFormulaValue() != null) {
            cell.setCellFormula(formulaData.getFormulaValue());
        }
    }
Transform the data and then to set into the cell

@param cellWriteHandlerContext context
fastexcel-core/src/main/java/cn/idev/excel/write/executor/AbstractExcelWriteExecutor.java