private void mapClass() {
            addMembers(mappingClass);
            ClassDoc[] interfaces = mappingClass.interfaces();
            for (int i = 0; i < interfaces.length; i++) {
                String locallevel = level + 1;
                ClassMembers cm = new ClassMembers(interfaces[i], locallevel);
                cm.mapClass();
            }
            if (mappingClass.isClass()) {
                ClassDoc superclass = mappingClass.superclass();
                if (!(superclass == null || mappingClass.equals(superclass))) {
                    ClassMembers cm = new ClassMembers(superclass,
                                                       level + "c");
                    cm.mapClass();
                }
            }
        }