Pennylane API Client
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    Variable CustomerInvoiceAppendixSchemaConst

    CustomerInvoiceAppendixSchema: Struct<
        {
            created_at: typeof String$;
            filename: typeof String$;
            id: typeof Number$;
            updated_at: typeof String$;
            url: typeof String$;
        },
    > = ...

    Appendix item attached to a customer invoice.