closeQuietly(imagePath);
        final Path cssPath = ResourceUtil.getCssPath(themeName);
        closeQuietly(cssPath);
        final Path jsPath = ResourceUtil.getJavaScriptPath(themeName);
        closeQuietly(jsPath);
    }

    /**
     * Extracts the theme name from the artifact name.
     *
     * @param artifact the theme artifact
     * @return the theme name