@type t() :: %Stripe.LineItem{
  amount: integer(),
  amount_excluding_tax: integer() | nil,
  currency: binary(),
  description: binary() | nil,
  discount_amounts: term() | nil,
  discountable: boolean(),
  discounts: term() | nil,
  id: binary(),
  invoice_item: binary() | Stripe.Invoiceitem.t(),
  livemode: boolean(),
  margins: term() | nil,
  metadata: term(),
  object: binary(),
  period: term(),
  plan: Stripe.Plan.t() | nil,
  price: Stripe.Price.t() | nil,
  proration: boolean(),
  proration_details: term() | nil,
  quantity: integer() | nil,
  subscription: (binary() | Stripe.Subscription.t()) | nil,
  subscription_item: binary() | Stripe.SubscriptionItem.t(),
  tax_amounts: term(),
  tax_rates: term(),
  type: binary(),
  unit_amount_excluding_tax: binary() | nil
}

The line_item type.

• amount The amount, in cents (or local equivalent).
• amount_excluding_tax The integer amount in cents (or local equivalent) representing the amount for this line item, excluding all tax and discounts.
• currency Three-letter ISO currency code, in lowercase. Must be a supported currency.
• description An arbitrary string attached to the object. Often useful for displaying to users.
• discount_amounts The amount of discount calculated per discount for this line item.
• discountable If true, discounts will apply to this line item. Always false for prorations.
• discounts The discounts applied to the invoice line item. Line item discounts are applied before invoice discounts. Use expand[]=discounts to expand each discount.
• id Unique identifier for the object.
• invoice_item The ID of the invoice item associated with this line item if any.
• livemode Has the value true if the object exists in live mode or the value false if the object exists in test mode.
• margins The margins applied to the line item. When set, the default_margins on the invoice do not apply to the line item. Use expand[]=margins to expand each margin.
• metadata Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. Note that for line items with type=subscription this will reflect the metadata of the subscription that caused the line item to be created.
• object String representing the object's type. Objects of the same type share the same value.
• period
• plan The plan of the subscription, if the line item is a subscription or a proration.
• price The price of the line item.
• proration Whether this is a proration.
• proration_details Additional details for proration line items
• quantity The quantity of the subscription, if the line item is a subscription or a proration.
• subscription The subscription that the invoice item pertains to, if any.
• subscription_item The subscription item that generated this line item. Left empty if the line item is not an explicit result of a subscription.
• tax_amounts The amount of tax calculated per tax rate for this line item
• tax_rates The tax rates which apply to the line item.
• type A string identifying the type of the source of this line item, either an invoiceitem or a subscription.
• unit_amount_excluding_tax The amount in cents (or local equivalent) representing the unit amount for this line item, excluding all tax and discounts.