/// <summary>
/// Returns whether the given <paramref name="chunkName"/> is a top-level chunk type.
/// Top-level chunks are only allowed in the root. For example, the Movie chunk.
/// </summary>
/// <param name="chunkName">the chunk name</param>
/// <returns>true if it is a top-level chunk type, false otherwise</returns>
public static bool IsTopLevel(this Mpeg4HeaderName chunkName)
{
ICollection <Mpeg4HeaderName> suitableParents = chunkName.GetSuitableParents();
return(suitableParents.Count == 1 && suitableParents.Contains(Mpeg4HeaderName.Root));
}
