final Font font = workbook.getFontAt(fontIndex);
final StyleBuilder styleBuilder = new StyleBuilder();
// Font bold, italic, underline
if (font.getBoldweight() >= Font.BOLDWEIGHT_BOLD) {
styleBuilder.bold();
}
if (font.getItalic()) {
styleBuilder.italic();
}
if (font.getUnderline() != FontUnderline.NONE.getByteValue()) {