--- a/src/lib/AbstractParser.h	Sat Jun 12 21:29:18 2021 +0200
+++ b/src/lib/AbstractParser.h	Sat Jun 12 22:37:44 2021 +0200
@@ -59,7 +59,7 @@
 	 * No write() call is expected after close() and would fail.
 	 * However the parser object remains valid and may be used to get some auxiliary information (if supperted by given implementation).
 	 */
-	void close();
+	virtual void close();
 protected:
 	AbstractParser();