private List<? extends AnAction> createAdditionalRollbackActions() {
    List<AnAction> result = new ArrayList<>();
    for (AbstractVcs vcs : myAffectedVcses) {
      RollbackEnvironment rollbackEnvironment = vcs.getRollbackEnvironment();
      if (rollbackEnvironment == null) continue;
      result.addAll(rollbackEnvironment.createCustomRollbackActions());
    }
    return result;
  }
private List<? extends AnAction> createAdditionalRollbackActions()