/// <summary>
/// Constructs a feed item with a required title and link. Valid RSS and Atom.
/// </summary>
/// <param name="title">The title of the feed item</param>
public FeedItem(string title, string link)
: this(title)
{
Feed.CheckRequiredValue(link, "link");
Link = link;
}
/// <summary>
/// Constructs a feed item with a required title. Valid RSS.
/// </summary>
/// <param name="title">The title of the feed item</param>
public FeedItem(string title)
{
Feed.CheckRequiredValue(title, "title");
Title = title;
}