Java integration
curl \ -H "Authorization: $API_KEY" \ http://pi.us-east-1.amazonaws.com/#X-Amz-Target=PerformanceInsightsv20180227.GetResourceMetrics
curl \ -H "Authorization: $API_KEY" \ http://pi.us-east-1.amazonaws.com/#X-Amz-Target=PerformanceInsightsv20180227.GetResourceMetadata