private AmazonGlacier resolveGlacierClient() {
        return glacierClient == null ? AmazonGlacierClientBuilder.defaultClient() : glacierClient;
    }
Set the client for working with Amazon SNS when polling for the archive retrieval job status.

@param snsClient The SNS client.

@return This object for chaining.
aws-java-sdk-glacier/src/main/java/com/amazonaws/services/glacier/transfer/ArchiveTransferManagerBuilder.java