if (artifact.getUrl() != null) {
ClassLoader classLoader = deploymentContext.getClassLoader();
if (classLoader instanceof CompositeClassLoader) {
CompositeClassLoader ccl = (CompositeClassLoader)classLoader;
for (URL dep : artifact.getUrls()) {
ccl.addURL(dep);
}
}
}
} else {
// HACK: [rfeng] Add as an unknown model extension