@Override
    protected AmazonSimpleEmailServiceV2Async build(AwsAsyncClientParams params) {
        return new AmazonSimpleEmailServiceV2AsyncClient(params);
    }
Construct an asynchronous implementation of AmazonSimpleEmailServiceV2Async using the current builder
configuration.

@param params
       Current builder configuration represented as a parameter object.
@return Fully configured implementation of AmazonSimpleEmailServiceV2Async.
aws-java-sdk-sesv2/src/main/java/com/amazonaws/services/simpleemailv2/AmazonSimpleEmailServiceV2AsyncClientBuilder.java