SeoToolkit how to get Meta data in code

Hi,
I use SeoToolkit plugin 2.3.0 with Umbraco 10

The question is how to get Meta data for current page from the code?

I tried to do this in this way:

string metaTitle = currentPage.HasValue("metaTitle") ? currentPage.Value<string>("metaTitle") : null;
string metaDescription = currentPage.HasValue("metaDescription") ? currentPage.Value<string>("metaDescription") : null;
string metaKeywords = currentPage.HasValue("metaKeywords") ? currentPage.Value<string>("metaKeywords") : null;

But no result.

I need this to reuse this metadata for Microdata shema.org

  <script type="application/ld+json">
    {
      "@@context": "https://schema.org/",
      "@@type": "Product",
      "name": "Executive Anvil",
      "description": "@metaDescription",
    }
    </script>

This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/111673-seotoolkit-how-to-get-meta-data-in-code