public static AWSCloudWatchRUMAsyncClientBuilder asyncBuilder() {
        return AWSCloudWatchRUMAsyncClientBuilder.standard();
    }
Client for accessing CloudWatch RUM asynchronously. Each asynchronous method will return a Java Future object
representing the asynchronous operation; overloads which accept an {@code AsyncHandler} can be used to receive
notification when an asynchronous operation completes.
<p>
<p>
With Amazon CloudWatch RUM, you can perform real-user monitoring to collect client-side data about your web
application performance from actual user sessions in real time. The data collected includes page load times,
client-side errors, and user behavior. When you view this data, you can see it all aggregated together and also see
breakdowns by the browsers and devices that your customers use.
</p>
<p>
You can use the collected data to quickly identify and debug client-side performance issues. CloudWatch RUM helps you
visualize anomalies in your application performance and find relevant debugging data such as error messages, stack
traces, and user sessions. You can also use RUM to understand the range of end-user impact including the number of
users, geolocations, and browsers used.
</p>
aws-java-sdk-cloudwatchrum/src/main/java/com/amazonaws/services/cloudwatchrum/AWSCloudWatchRUMAsyncClient.java