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

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