@type t() :: %Ramp.Bills.Bill{
  accounting_fields: [Ramp.AccountingFieldSelection.t()],
  amount: Ramp.Money.t(),
  created_at: DateTime.t() | nil,
  due_at: DateTime.t() | nil,
  id: String.t(),
  invoice_date: DateTime.t() | nil,
  invoice_number: String.t() | nil,
  line_items: [Ramp.Bills.LineItem.t()],
  memo: String.t() | nil,
  payment_method: String.t() | nil,
  status: String.t() | nil,
  updated_at: DateTime.t() | nil,
  vendor_id: String.t() | nil
}