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

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