public void Visit(MdBlockQuote blockQuote) => VisitContainer(blockQuote);
/// <summary>
/// Creates a new instance of <see cref="MdDocument"/> with the specified content.
/// </summary>
/// <remarks>
/// MdBlockQuote implements <see cref="IEnumerable{MdBlock}"/> so this constructor is necessary to prevent ambiguities.
/// </remarks>
public static MdDocument Document(MdBlockQuote blockQuote) => new MdDocument(blockQuote);