private static string GetHomeworkStatusHtmlString(this Homework homework)
{
if (homework == null)
{
return("<td></td>");
}
return(!homework.IsCompleted
? IsNullOrEmpty(homework.ReviewComment) ? $"<td class=\"table-success\">{homework.GetUrl()}</td>" : "<td></td>"
: $"<td class=\"bg-success\">{homework.GetUrl()}</td>");
}