Class Drop

src/main/java/field/graphics/Window.java:1345–1361

            return "ev<" + before + "->" + after + ">";
        }

        public Event<T> copy() {
            Event<T> e = new Event(before, after);
            e.properties.putAll(properties);
            return e;
        }

        @Override
        protected fieldlinker.AsMap delegateTo() {
            return properties;
        }
    }


}