@Override
    protected AmazonDynamoDBAsync build(AwsAsyncClientParams params) {
        if (endpointDiscoveryEnabled() && getEndpoint() == null) {
            return new AmazonDynamoDBAsyncClient(params, true);
        }
        return new AmazonDynamoDBAsyncClient(params);
    }
Construct an asynchronous implementation of AmazonDynamoDBAsync using the current builder configuration.

@param params
       Current builder configuration represented as a parameter object.
@return Fully configured implementation of AmazonDynamoDBAsync.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/AmazonDynamoDBAsyncClientBuilder.java