我需要使用java获得注册到特定autoscalinggroup的所有ec2示例的私有ip地址。下面的代码连接到“自动缩放”组，并为我提供所有已注册示例的示例ID。如何从找到的示例ID中获取示例的私有ip地址。

AmazonAutoScaling amazonAutoScaling = AmazonAutoScalingClientBuilder.standard()
          .withCredentials(new AWSStaticCredentialsProvider(new  BasicAWSCredentials("***", "***")))
          .withRegion("us-east-2").build();
    DescribeAutoScalingGroupsResult describeAutoScalingGroupsResult = 
    amazonAutoScaling.describeAutoScalingGroups();
    List<AutoScalingGroup> autoScalingGroupList = describeAutoScalingGroupsResult.getAutoScalingGroups();
    for(AutoScalingGroup autoScalingGroup: autoScalingGroupList) {
        if(autoScalingGroup.getAutoScalingGroupName().equals("trendServerAutoScalingGroup")) {
            List<Instance> instances = autoScalingGroup.getInstances();
            System.out.println(instances.toString());
            for(Instance instance : instances) {
                System.out.println(instance.getInstanceId().toString());
                //GET IP ADDRESS of the instance ??
            }
         }
      }