Access product image metafields in liquid template

Store Design
1

Is there a way to use metafields within product-media.liquid and product-thumbnail.liquid ?

I am trying to access the metafield “image-code” I added with Admin API :

$image->metafields = [
    [
        "key"       => "image-code",
        "value"     => "IMAGE_123",
        "type"      => "single_line_text_field",
        "namespace" => "data",
    ]
];

How can I access the metadata in the template ?