如何在Schema.org中添加面包屑到产品中？

<ol itemscope itemtype="https://schema.org/BreadcrumbList">
  <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem">
    <a itemprop="item" href="https://example.com/category1">
      <span itemprop="name">Category 1</span>
    </a>
    <meta itemprop="position" content="1">
  </li>
  <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem">
    <a itemprop="item" href="https://example.com/category1/subcategory1">
      <span itemprop="name">Subcategory 1</span>
    </a>
    <meta itemprop="position" content="2">
  </li>
  <li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem">
    <a itemprop="item" href="https://example.com/category1/subcategory1/product1">
      <span itemprop="name">Product 1</span>
    </a>
    <meta itemprop="position" content="3">
  </li>
</ol>