Transform a JSON object to a map

TransformFromMapToJson.java

final Transformer<Map<String, String>, JSON> transformer = Transformers.fromMap();
final Map<String, String> keyValuePairs = new HashMap<>();
keyValuePairs.put("aKey", "aValue");
keyValuePairs.put("anotherKey", "anotherValue");
final JSON json = transformer.transform(keyValuePairs);
updater.valueUpdater(JSON.class).update("a/topic", json, callback);