output file list using metafields

{% if product.metafields.custom.file2.value != blank %}
  <ul>
    {% for file in product.metafields.custom.file2.value %}
      <li>
        <a href="{{ file.url.value }}" target="new">{{ file.title }}</a>
      </li>
    {% endfor %}
  </ul>
{% else %}
  <p>No files available.</p>
{% endif %}