java.lang.Object o = null; MapHandler.get_map_element(i.instances, ci.name, o);
o = null; MapHandler.get_map_element(i.instances, o, ci.name);
    static void finalize_item_element(java.lang.Object p0, java.lang.Object p1) {        Item i = (Item) p0;                if (i != null) {                            CategoryItem ci = (CategoryItem) p1;                        if (ci != null) {                    java.lang.System.out.println("INFO: Finalize item element.");                java.lang.Object o = null;                MapHandler.get_map_element(i.items, ci.name, o);                ItemHandler.finalize_object(o, ci.item_category, ci.item_abstraction);                MapHandler.remove_map_element(i.items, ci.name);                    java.lang.Object o = null;                MapHandler.get_map_element(i.positions, ci.name, o);                ItemHandler.finalize_object(o, ci.position_category, ci.position_abstraction);                MapHandler.remove_map_element(i.positions, ci.name);                    java.lang.Object o = null;                MapHandler.get_map_element(i.instances, ci.name, o);                ItemHandler.finalize_object(o, ci.instance_category, ci.instance_abstraction);                MapHandler.remove_map_element(i.instances, ci.name);                    java.lang.Object o = null;                MapHandler.get_map_element(i.interactions, ci.name, o);                ItemHandler.finalize_object(o, ci.interaction_category, ci.interaction_abstraction);                MapHandler.remove_map_element(i.interactions, ci.name);                } else {                                java.lang.System.out.println("ERROR: Could not initialize item element. The category item is null.");            }        } else {                        java.lang.System.out.println("ERROR: Could not initialize item element. The item is null.");        }    }