@type t() :: %PolarExpress.Schemas.ProductUpdate{
  attached_custom_fields: term(),
  description: term(),
  is_archived: term(),
  medias: term(),
  metadata: term(),
  name: term(),
  prices: term(),
  recurring_interval: term(),
  recurring_interval_count: term(),
  trial_interval: term(),
  trial_interval_count: term(),
  visibility: term()
}

• attached_custom_fields - Nullable.
• description - The description of the product. Nullable.
• is_archived - Whether the product is archived. If true, the product won't be available for purchase anymore. Existing customers will still have access to their benefits, and subscriptions will continue normally. Nullable.
• medias - List of file IDs. Each one must be on the same organization as the product, of type product_media and correctly uploaded. Nullable.
• metadata - Key-value object allowing you to store additional information.

The key must be a string with a maximum length of 40 characters. The value must be either:

• A string with a maximum length of 500 characters
• An integer
• A floating-point number
• A boolean

You can store up to 50 key-value pairs.

• name - Nullable.
• prices - List of available prices for this product. If you want to keep existing prices, include them in the list as an ExistingProductPrice object. Nullable.
• recurring_interval - The recurring interval of the product. If None, the product is a one-time purchase. Can only be set on legacy recurring products. Once set, it can't be changed. Nullable.
• recurring_interval_count - Number of interval units of the subscription. If this is set to 1 the charge will happen every interval (e.g. every month), if set to 2 it will be every other month, and so on. Once set, it can't be changed.** Nullable.
• trial_interval - The interval unit for the trial period. Nullable.
• trial_interval_count - The number of interval units for the trial period. Nullable.
• visibility - The visibility of the product. Nullable.