private AnAction[] createGroupingActions() {
final UsageGroupingRuleProvider[] providers =
Extensions.getExtensions(UsageGroupingRuleProvider.EP_NAME);
List<AnAction> list = new ArrayList<AnAction>(providers.length);
for (UsageGroupingRuleProvider provider : providers) {
ContainerUtil.addAll(list, provider.createGroupingActions(this));
}
return list.toArray(new AnAction[list.size()]);
}
