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

@param params
       Current builder configuration represented as a parameter object.
@return Fully configured implementation of AWSSimpleSystemsManagementAsync.
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/AWSSimpleSystemsManagementAsyncClientBuilder.java