internal XAccessor(XmlNode node)
{
node.ThrowIfNullArgument(nameof(node));
_node = node;
_nsmgr = new XmlNamespaceManager(node.OwnerDocument.NameTable);
}
internal XAccessor(XmlNode node, XmlNamespaceManager nsmgr)
{
nsmgr.ThrowIfNullArgument(nameof(nsmgr));
node.ThrowIfNullArgument(nameof(node));
_node = node;
_nsmgr = nsmgr;
}