public static Instance getHostByRandomWeight2(List<Instance> instances) {
		return getHostByRandomWeight(instances);
	}
Choose instance by weight.
@param instances Instance List
@return the chosen instance
spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/balancer/NacosBalancer.java