*/
public void refreshExtensions() throws ExtensionRefreshException {
ExtensionList<ExtensionFinder> finders = getExtensionList(ExtensionFinder.class);
for (ExtensionFinder ef : finders) {
if (!ef.isRefreshable())
throw new ExtensionRefreshException(ef+" doesn't support refresh");
}
List<ExtensionComponentSet> fragments = Lists.newArrayList();
for (ExtensionFinder ef : finders) {
fragments.add(ef.refresh());