public override void WriteQualifiedName(XmlDictionaryString localName, XmlDictionaryString namespaceUri)
 {
     CheckAsync();
     CoreWriter.WriteQualifiedName(localName, namespaceUri);
 }
 public override void WriteQualifiedName(string localName, string ns)
 {
     CheckAsync();
     CoreWriter.WriteQualifiedName(localName, ns);
 }