public void SetAuthor(RegisteredUser author)
{
if (Author != null)
{
return;
}
Author = author;
author.AddComment(this);
}
public Comment(string content, RegisteredUser author)
{
if (content == null)
{
throw new ArgumentNullException(nameof(content));
}
if (author == null)
{
throw new ArgumentNullException(nameof(author));
}
var snapshot = DateTime.UtcNow;
Content = content;
CreatedAt = snapshot;
LastChangedAt = snapshot;
Author = author;
author.AddComment(this);
}