private Map<String, Object> registeredInstance(String id, long date) {
		HashMap<String, Object> map = new HashMap<>();
		map.put("id", id);
		map.put("date", new Date(date));
		return map;
	}
@author Spencer Gibb
@author Gang Li
@author Weix Sun
spring-cloud-netflix-eureka-server/src/main/java/org/springframework/cloud/netflix/eureka/server/EurekaController.java