Checks whether the node that is passed in is contained in the current collection.
objXMLDOMNode = objXMLDOMSelection.matches(objXMLDOMNode)
HRESULT matches(IXMLDOMNode* pNode, IXMLDOMNode** ppNode);
E_INVALIDARG
Value returned if pNode=NULL.
An error for cases that are not allowed, as outlined in the XSL specification (applied to ID, IDREF, and Ancestor).
When matches is called with node A, it returns node B such that if B was set as the context on a query, A is in the result set of the query. If no such B node is found, matches returns Null.
The matches method does not take into account the current context of the query.