How to use the dmn-js-shared/lib/util/DiUtil.containsDi function in dmn-js-shared

var definitionsView;

    for (var i = 0; i < views.length; i++) {

      const view = views[i];
      const el = view.element;

      if (is(el, 'dmn:Decision')) {
        return view;
      }

      if (is(el, 'dmn:Definitions')) {
        definitionsView = view;

        if (containsDi(el)) {
          return view;
        }
      }
    }

    return definitionsView || views[0];
  }

eventBus.on('import.start', ({ definitions }) => {
    if (!containsDi(definitions)) {
      createDi(definitions);
    }
  });
}

var definitionsView;

    for (var i = 0; i < views.length; i++) {

      const view = views[i];
      const el = view.element;

      if (is(el, 'dmn:Decision')) {
        return view;
      }

      if (is(el, 'dmn:Definitions')) {
        definitionsView = view;

        if (containsDi(el)) {
          return view;
        }
      }
    }

    return definitionsView || views[0];
  }

opens(element) {
          return is(element, 'dmn:Definitions') && containsDi(element);
        }
      },