url = url.trim();
if (!url.isEmpty()) {
if (url.startsWith("json:")) {
repositories.add(new JsonRepository(url.substring("json:".length())));
} else if (url.startsWith("xml:")) {
repositories.add(new XmlRepository(url.substring("xml:".length())));
} else {
logger.warn("Unrecognized resource repository: " + url);
}
}
}