public QName(String qname,Element namespaceContext,PrefixResolver resolver){
  this(qname,namespaceContext,resolver,false);
}

public QName ( String qname , Element namespaceContext , PrefixResolver resolver ) { this ( qname , namespaceContext , resolver , false ) ; }
construct a qname from a string , resolving the prefix using the given namespace context and prefix resolver . the default namespace is not resolved .
