sheet
    .get_sheet_protection_mut()
    .set_password("password")
    .set_sheet(true);

book.get_workbook_protection_mut()
    .set_workbook_password("password");

let html = r##"<font color="red">test</font><br><font class="test" color="#48D1CC">TE<b>S</b>T<br/>TEST</font>"##;
let richtext = umya_spreadsheet::helper::html::html_to_richtext(html).unwrap();
sheet.get_cell_mut("G16").set_rich_text(richtext);
// Enable line breaks.
sheet.get_cell_mut("G16").get_style_mut().get_alignment_mut().set_wrap_text(true);

let range = "C5:F9";
let row = 12;
let column = 4;
book.get_sheet_by_name_mut("Sheet1").unwrap().move_range(range, &row, &column);