Avoid collision of description on Offer, Refund, Bolt12Invoice

Swift will auto-generate a `description` accessor. We here avoid any
conflicting methods in our API.

Author: tnull

bindings/ldk_node.udl

@@ -771,7 +771,7 @@ interface Offer {
 	constructor([ByRef] string offer_str);
 	OfferId id();
 	boolean is_expired();
-	string? description();
+	string? offer_description();
 	string? issuer();
 	OfferAmount? amount();
 	boolean is_valid_quantity(u64 quantity);
@@ -787,7 +787,7 @@ interface Offer {
 interface Refund {
 	[Throws=NodeError, Name=from_str]
 	constructor([ByRef] string refund_str);
-	string description();
+	string refund_description();
 	u64? absolute_expiry_seconds();
 	boolean is_expired();
 	string? issuer();
@@ -810,7 +810,7 @@ interface Bolt12Invoice {
 	u64? absolute_expiry_seconds();
 	u64 relative_expiry();
 	boolean is_expired();
-	string? description();
+	string? invoice_description();
 	string? issuer();
 	string? payer_note();
 	sequence<u8>? metadata();

src/ffi/types.rs

@@ -159,7 +159,7 @@ impl Offer {
 	/// A complete description of the purpose of the payment.
 	///
 	/// Intended to be displayed to the user but with the caveat that it has not been verified in any way.
-	pub fn description(&self) -> Option<String> {
+	pub fn offer_description(&self) -> Option<String> {
 		self.inner.description().map(|printable| printable.to_string())
 	}
 
@@ -288,7 +288,7 @@ impl Refund {
 	/// A complete description of the purpose of the refund.
 	///
 	/// Intended to be displayed to the user but with the caveat that it has not been verified in any way.
-	pub fn description(&self) -> String {
+	pub fn refund_description(&self) -> String {
 		self.inner.description().to_string()
 	}
 
@@ -466,7 +466,7 @@ impl Bolt12Invoice {
 	///
 	/// [`Offer::description`]: lightning::offers::offer::Offer::description
 	/// [`Refund::description`]: lightning::offers::refund::Refund::description
-	pub fn description(&self) -> Option<String> {
+	pub fn invoice_description(&self) -> Option<String> {
 		self.inner.description().map(|printable| printable.to_string())
 	}