@NotNull
  static List<OrderEnumerationHandler> getCustomHandlers(@NotNull Module module) {
    List<OrderEnumerationHandler> customHandlers = null;
    for (OrderEnumerationHandler.Factory handlerFactory : OrderEnumerationHandler.EP_NAME.getExtensionList()) {
      if (handlerFactory.isApplicable(module)) {
        if (customHandlers == null) {
          customHandlers = new SmartList<>();
        }
        customHandlers.add(handlerFactory.createHandler(module));
      }
    }
    return customHandlers == null ? Collections.emptyList() : customHandlers;
  }
@NotNull
  static List<OrderEnumerationHandler> getCustomHandlers(@NotNull Module module)