private static ObjectMapper createObjectMapper() { om = new ObjectMapper(); final SimpleModule module = new SimpleModule("JsonMergePatch", new Version(1, 0, 0, null, "aerogear", "sync")); module.addDeserializer(JsonPatchEdit.class, new EditDeserializer()); module.addSerializer(JsonPatchEdit.class, new EditSerializer()); module.addDeserializer(JsonPatchMessage.class, new PatchMessageDeserializer()); module.addSerializer(JsonPatchMessage.class, new PatchMessageSerializer()); om.registerModule(module); return om; }