X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning-invoice%2Fsrc%2Flib.rs;fp=lightning-invoice%2Fsrc%2Flib.rs;h=9ee8e49b7dcb8d2a2b307f12087b815659764dc0;hb=20e776bc8e2ebe7af3df99227c1f1a5467f42fc3;hp=11406a4644dd0f0e0c5133dc89cf8c84c55f7bbb;hpb=b5f0ebab77961ce243fcf5a5fad3d4e161f4952a;p=rust-lightning

diff --git a/lightning-invoice/src/lib.rs b/lightning-invoice/src/lib.rs
index 11406a464..9ee8e49b7 100644
--- a/lightning-invoice/src/lib.rs
+++ b/lightning-invoice/src/lib.rs
@@ -607,6 +607,20 @@ impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool> InvoiceBuilder<D, H, T,
 	}
 }
 
+impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool> InvoiceBuilder<D, H, T, C, tb::True> {
+	/// Sets the `basic_mpp` feature as optional.
+	pub fn basic_mpp(mut self) -> Self {
+		self.tagged_fields = self.tagged_fields
+			.drain(..)
+			.map(|field| match field {
+				TaggedField::Features(f) => TaggedField::Features(f.set_basic_mpp_optional()),
+				_ => field,
+			})
+			.collect();
+		self
+	}
+}
+
 impl<S: tb::Bool> InvoiceBuilder<tb::True, tb::True, tb::True, tb::True, S> {
 	/// Builds and signs an invoice using the supplied `sign_function`. This function MAY NOT fail
 	/// and MUST produce a recoverable signature valid for the given hash and if applicable also for