title: Access image metafield inside product.liquid in Shopify
body: <p>I am trying to access image metafield inside the product.liquid template in Shopify.
  This is the metafield on a image:</p>
  
  <pre><code>{
  metafields: [
  {
  id: 11419631342244,
  namespace: "tags",
  key: "821753034",
  value: "test",
  value_type: "string",
  description: this is a test,
  owner_id: 124682934492,
  created_at: "2019-12-23T18:20:58-05:00",
  updated_at: "2019-12-23T18:20:58-05:00",
  owner_resource: "product_image",
  admin_graphql_api_id: "gid://shopify/Metafield/12312423535"
  }
  ]
  }
  </code></pre>
  
  <p>I tried accessing it under the <code>{% for image in product.images %}</code>
  When I access image.alt it returns the result, but when I access image.metafields.namespace['tags'] it returns nothing. I have tried different syntax. If anyone knows how I can access the metafields that will be great.</p>