1 files changed, 7 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 21d5ab4..f7ef93b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -71,6 +71,10 @@ mod dummy_bool_test {
             unimplemented!()
         }
 
+        fn option_builder<T: 'static + BuildableValue>(&self) -> Box<dyn CollectionBuilder<Output = Option<T>, Error = Self::Error>> {
+            unimplemented!()
+        }
+
         fn vec_builder<T>(&self) -> Box<dyn CollectionBuilder<Output = Vec<T>, Error = Self::Error>>
             where T: 'static + BuildableValue
         {
@@ -155,6 +159,9 @@ mod vec_test {
         fn string_builder(&self) -> Box<dyn ValueBuilder<Output = String, Error = Self::Error>> {
             unimplemented!()
         }
+        fn option_builder<T: 'static + BuildableValue>(&self) -> Box<dyn CollectionBuilder<Output = Option<T>, Error = Self::Error>> {
+            unimplemented!()
+        }
         fn vec_builder<T>(&self) -> Box<dyn CollectionBuilder<Output = Vec<T>, Error = Self::Error>>
             where T: 'static + BuildableValue
         {