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

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