public static class MapSeriesOption implements SeriesOption {        private String type = "map";        private String name;        private boolean roam;        private String map;        private Map<String, Object> emphasis;        private Object data;        public MapSeriesOption(...) {            this.name = "SOME_NAME";            this.roam = true/false;  // map chart specific !            this.map = "myMapName"; // map chart specific !            this.emphasis = emphasisConfig // eg Map.of("label", Map.of("show", true)); // some things specific to map chart ?             this.data = data;        }       // implement all setters (I actually don't use them so I let the IDE generate unused methods)}

new Option()  .setTitle()  .setToolTip  ...  .setSeries(new SeriesOption[]{new MapSeriesOption(...)});// then I get the json and use it in my system String optionJson = new EChartsSerializer().toJson(option)