/// <summary>
/// Internal method to maintain the identity of the parent node.
/// </summary>
/// <param name="parentNode">The parent node of this one</param>
internal void SetParent(HtmlElement parentNode)
{
_parent = parentNode;
}
/// <summary>
/// This constructor is used by the subclasses.
/// </summary>
protected HtmlNode()
{
_parent = null;
}
