Ok(InvoiceRequestBuilder::deriving_metadata(self, payer_id, expanded_key, entropy_source))
}
- /// Creates an [`InvoiceRequest`] for the offer with the given `metadata` and `payer_id`, which
- /// will be reflected in the `Invoice` response.
+ /// Creates an [`InvoiceRequestBuilder`] for the offer with the given `metadata` and `payer_id`,
+ /// which will be reflected in the `Invoice` response.
///
/// The `metadata` is useful for including information about the derivation of `payer_id` such
/// that invoice response handling can be stateless. Also serves as payer-provided entropy while