f - rename ChannelManager::request_invoice

Author: jkczyz

lightning/src/ln/channelmanager.rs

@@ -7134,18 +7134,26 @@ where
 		Ok(builder)
 	}
 
-	/// Creates an [`InvoiceRequest`] for an [`Offer`] from the given parameters and enqueues it to
-	/// be sent via an onion message.
+	/// Pays for an [`Offer`] using the given parameters by creating an [`InvoiceRequest`] and
+	/// enqueuing it to be sent via an onion message. [`ChannelManager`] will pay the actual
+	/// [`Bolt12Invoice`] once it is received.
 	///
 	/// Uses [`InvoiceRequestBuilder`] such that the [`InvoiceRequest`] it builds is recognized by
-	/// the [`ChannelManager`] when handling [`Bolt12Invoice`] messages for the request.
+	/// the [`ChannelManager`] when handling a [`Bolt12Invoice`] message for the request. The
+	/// optional parameters are used in the builder, if `Some`:
+	/// - `quantity` for [`InvoiceRequest::quantity`] which may be set if
+	///   [`Offer::expects_quantity`] is `true`.
+	/// - `amount_msats` if overpaying what is required for the given `quantity` is desired, and
+	/// - `payer_note` for [`InvoiceRequest::payer_note`].
 	///
 	/// The provided `payment_id` is used to ensure that only one invoice is paid for the request.
 	///
 	/// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
+	/// [`InvoiceRequest::quantity`]: crate::offers::invoice_request::InvoiceRequest::quantity
+	/// [`InvoiceRequest::payer_note`]: crate::offers::invoice_request::InvoiceRequest::payer_note
 	/// [`InvoiceRequestBuilder`]: crate::offers::invoice_request::InvoiceRequestBuilder
 	/// [`Bolt12Invoice`]: crate::offers::invoice::Bolt12Invoice
-	pub fn request_invoice(
+	pub fn pay_for_offer(
 		&self, offer: &Offer, quantity: Option<u64>, amount_msats: Option<u64>,
 		payer_note: Option<String>, payment_id: PaymentId, retry_strategy: Retry,
 		max_total_routing_fee_msat: Option<u64>