Given node name (with path), an attribute name and an array of attribute names, returns a MultiKeyHashtable
with keys from two or more attributes and value from another attribute.
Return Vector of nodes for given node name and one given attribute values
A common usage of this method is: to obtain a subset of nodes from a set of sibling nodes.
Return Vector of nodes for given node name and one given attribute values
More complicated case is to give a hashtable of attribute name-value pairs, but
we are not going to provide this since it's rarely used.
XMLUtil constructs from either an xml file or a node, and returns detail information of
node by directory style path into easy-to-use data formats, such as String, int, Hashtable
of String, etc.