public @NotNull List<JavaArrangementOverriddenMethodsInfo> getOverriddenMethods() {
    List<JavaArrangementOverriddenMethodsInfo> result = new ArrayList<>();
    for (Map.Entry<PsiClass, List<OverriddenMethodPair>> entry: myOverriddenMethods.entrySet()) {
      String name = entry.getKey().getName();

      Map<PsiClass, List<OverriddenMethodPair>> groupedByClass = entry.getValue().stream()
             .collect(Collectors.groupingBy(pair -> pair.overriding.getContainingClass()));
      for (Map.Entry<PsiClass, List<OverriddenMethodPair>> listEntry: groupedByClass.entrySet()) {
        JavaArrangementOverriddenMethodsInfo info = new JavaArrangementOverriddenMethodsInfo(name);
        result.add(info);

        List<OverriddenMethodPair> value = listEntry.getValue();
        value.sort(Comparator.comparingInt(pair -> pair.overridden.getTextOffset()));
        for (OverriddenMethodPair methodPair: value) {
          JavaElementArrangementEntry methodEntry = myMethodEntriesMap.get(methodPair.overriding);
          info.addMethodEntry(methodEntry);
        }
      }
    }

    return result;
  }
public @NotNull List<JavaArrangementOverriddenMethodsInfo> getOverriddenMethods()