@type t() :: %Inttegro.PurchaseIntentVariant{
  active: boolean(),
  position: integer() | nil,
  price: Inttegro.PurchaseIntentPrice.t() | nil,
  product: Inttegro.PurchaseIntentProduct.t() | nil,
  product_id: String.t(),
  variant_values: %{optional(String.t()) => String.t()}
}