@type t() :: %ExNylas.WebhookNotification.Order.Order.LineItem{ color: String.t() | nil, name: String.t() | nil, product_id: String.t() | nil, product_image_uri: String.t() | nil, quantity: non_neg_integer(), size: String.t() | nil, unit_price: Decimal.t() | nil, url: String.t() | nil }