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

@param params
       Current builder configuration represented as a parameter object.
@return Fully configured implementation of AWSSyntheticsAsync.
aws-java-sdk-synthetics/src/main/java/com/amazonaws/services/synthetics/AWSSyntheticsAsyncClientBuilder.java