@type t() :: %Inttegro.CreatePurchaseIntentRequest{
  expires_at: String.t() | nil,
  price: Inttegro.CreatePurchaseIntentRequestPrice.t() | nil,
  price_id: String.t() | nil,
  product: Inttegro.CreatePurchaseIntentRequestProduct.t() | nil,
  product_id: String.t() | nil,
  quantity: Inttegro.CreatePurchaseIntentRequestQuantity.t(),
  usage: Inttegro.CreatePurchaseIntentRequestUsage.t() | nil
}