@Override
    protected AWSControlTower build(AwsSyncClientParams params) {
        return new AWSControlTowerClient(params);
    }
Construct a synchronous implementation of AWSControlTower using the current builder configuration.

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