Modify an existing Product.

Id of the Product

Locale code of the translation

Comma separated values of the fields to return for the Product. Allowed values: id, name, page_title, description, meta_description, price, cost_per_item, compare_at_price, weight, stock, stock_unlimited, stock_threshold, stock_notification, back_in_stock_enabled, sku, brand, barcode, featured, reviews_enabled, status, shipping_required, type, days_to_expire, created_at, updated_at, package_format, length, width, height, diameter, google_product_category, google_product_category_text, quotable, permalink, discount, categories, images, variants, fields, currency.