super();
if (apiKey == null)
throw new NullPointerException("Error, an apiKey must be given. Specify directly in constructor, set the API_KEY field or provide an apiKey system property (-DapiKey=1234)");
try {
loader = new DocumentLoader(new URL("http://discogs.com"));
loader.setCharset(Charset.forName("UTF-8"));
loader.setLoadInterval(1000);
loader.setUserAgent("discogs-java/0.01 +http://benow.ca/projects/discogs-java");
setCacheEnabled(cacheEnabled);