Contains information about an item on a billing invoice.
@type t() :: %DocuSign.Model.BillingInvoiceItem{ chargeAmount: String.t() | nil, chargeName: String.t() | nil, invoiceItemId: String.t() | nil, quantity: String.t() | nil, taxAmount: String.t() | nil, taxExemptAmount: String.t() | nil, unitPrice: String.t() | nil }