src/jdk.compiler/share/classes/com/sun/tools/javac/util/Options.java

@@ -179,6 +179,11 @@
 
     public void notifyListeners() {
         for (Runnable r: listeners)
             r.run();
     }
+
+    public void clear() {
+        values.clear();
+        listeners = List.nil();
+    }
 }