gistfile1.java

        obj.registerMethod(runtime.newJavaMethod("will remove all the entries from the list, and then returns the list", new JavaMethod.WithNoArguments("clear!") {
                @Override
                public Object activate(IokeObject method, IokeObject context, IokeObject message, Object on) throws ControlFlow {
                    getArguments().getEvaluatedArguments(context, message, on, new ArrayList<Object>(), new HashMap<String, Object>());
                    
                    Object onAsList = IokeList.convertTo(on, true, message, context);
                    
                    IokeList.getList(onAsList).clear();
                    return onAsList;
                }
            }));