(ctor) XmlPersistanceWriter( string filePath, string title )
      virtual void BeginChildren()
      virtual void BeginObject( PersistableType typeID )
      virtual void Close()
      virtual void FinishChildren()
      virtual void FinishObject()
      virtual void SetBoolean( string key, bool value )
      virtual void SetDateTime( string key, DateTime value )
      virtual void SetInt32( string key, int value )
      virtual void SetString( string key, string value )
      virtual void WriteDocument( PersistableObject root )