blue book

product.metafields.custom["size"] =>
product.metafields.custom.size => 20

product.metafields.custom["first"] =>
product.metafields.custom.first => 1_testgid://shopify/Metaobject/77187153942

product.metafields.custom["last"] =>
product.metafields.custom.last =>

product.metafields.custom["to_h"] => test
product.metafields.custom.to_h => test

product.metafields.custom["to_liquid"] =>
product.metafields.custom.to_liquid =>