public static void Dump(this XContainer value, string comment = null)
{
var doc = value is XDocument ? (XDocument)value : new XDocument(value);
var settings = XmlExtensions.GetDefaultSettings();
if (!(value is XDocument))
{
settings.OmitXmlDeclaration = true;
}
Dump(doc.ToFormattedXmlString(settings), comment);
}