@Override
  protected @NotNull Map<String, Supplier<String>> getPresentableNameMap() {
    HashMap<String, Supplier<String>> map = new HashMap<>();
    map.put(getCallerType(), CallHierarchyBrowserBase::getCallerType);
    map.put(getCalleeType(), CallHierarchyBrowserBase::getCalleeType);
    return map;
  }
@Override
  protected @NotNull Map<String, Supplier<String>> getPresentableNameMap()