public String[] listRevisions(String org, String module) {
List revs = new ArrayList();
for (Iterator iter = settings.getResolvers().iterator(); iter.hasNext();) {
DependencyResolver resolver = (DependencyResolver) iter.next();
RevisionEntry[] entries = resolver.listRevisions(new ModuleEntry(new OrganisationEntry(
resolver, org), module));
if (entries != null) {
for (int i = 0; i < entries.length; i++) {
if (entries[i] != null) {
revs.add(entries[i].getRevision());