public void AmendContent(string content)
{
if (string.IsNullOrWhiteSpace(content))
throw new ArgumentNullException("content");
var answerAmended = new AnswerAmended(Id, content);
Apply(answerAmended);
Append(answerAmended);
}
private void Apply(AnswerAmended answerAmended)
{
Content = answerAmended.Content;
}
