public void TestDescribeMetrics()
{
MonitorClient monitorClient = GetMonitorClient();
DescribeMetricsRequest request = new DescribeMetricsRequest();
request.RegionId = "cn-north-1";
request.ServiceCode = "vm";
var result = monitorClient.DescribeMetrics(request).Result;
_output.WriteLine(JsonConvert.SerializeObject(result));
}