@Override
	public String toString() {
		return new StringBuilder("EurekaInstanceCanceledEvent{").append("appName='")
			.append(appName)
			.append("', ")
			.append("serverId='")
			.append(serverId)
			.append("', ")
			.append("replication=")
			.append(replication)
			.append("}")
			.toString();
	}
@author Spencer Gibb
@author Gregor Zurowski
spring-cloud-netflix-eureka-server/src/main/java/org/springframework/cloud/netflix/eureka/server/event/EurekaInstanceCanceledEvent.java