public static bool TryParse(string str, out YouTubeVideoPart part) {
part = Values.FirstOrDefault(temp => temp.Name == str);
return part != null;
}
/// <summary>
/// Adds the specified part to the collection.
/// </summary>
/// <param name="part">The part to add.</param>
public void Add(YouTubeVideoPart part) {
_list.Add(part);
}