return new DefaultArtifact(item.getGroupId(), item.getArtifactId(), item.getClassifier(), item.getType()/*extension*/, item.getVersion());
    }
    private AmazonS3Client createS3Client() {
        if (s3AccessKey != null || s3SecretKey != null) {
            return new AmazonS3Client(new BasicAWSCredentials(s3AccessKey, s3SecretKey));
        } else {
            return new AmazonS3Client(new DefaultAWSCredentialsProviderChain());
        }
    }