void getEnumeratedValue(Attribute attribute, bool useNames, Hashtable enums)
{
string name;
discardWhitespace();
name = useNames ? getName() : getNmtoken();
if (enums.ContainsKey(name))
throwXMLMiddlewareException("Enumerated values must be unique: " + name);
attribute.AddEnumeratedValue(name);
discardWhitespace();
}