@Override
  protected void createTrees(@NotNull Map<? super @Nls String, ? super JTree> type2TreeMap) {
    ActionGroup group = (ActionGroup)ActionManager.getInstance().getAction(IdeActions.GROUP_CALL_HIERARCHY_POPUP);

    JTree callerTree = createHierarchyTree(group);
    JTree calleeTree = createHierarchyTree(group);

    type2TreeMap.put(getCallerType(), callerTree);
    type2TreeMap.put(getCalleeType(), calleeTree);
  }
@Override
  protected void createTrees(@NotNull Map<? super @Nls String, ? super JTree> type2TreeMap)