byte[] buffer = new byte[1024];
            int bytesRead = stream.read(buffer);
            String fromStream = new String(buffer, 0, bytesRead, "UTF-8");

            // ## Assert ##
            assertEquals(content, str);
            assertEquals(content, fromStream);
        }
    }

            if (StringUtil.isNotBlank(credentialsPath)) {
                try (FileInputStream fis = new FileInputStream(credentialsPath)) {
                    final GoogleCredentials credentials = GoogleCredentials.fromStream(fis);
                    builder.setCredentials(credentials);
                } catch (final IOException e) {
                    throw new StorageException("Failed to load GCS credentials from " + credentialsPath, e);

            if (StringUtil.isNotBlank(credentialsFile)) {
                try (InputStream is = new FileInputStream(credentialsFile)) {
                    builder.setCredentials(ServiceAccountCredentials.fromStream(is));
                    if (logger.isDebugEnabled()) {
                        logger.debug("Using GCS credentials from file: {}", credentialsFile);
                    }
                } catch (final Exception e) {