The structure is all there, just need to implement owned_walk_path and clone on NewParametersContext.

src/renderer/walking.rs

@@ -51,3 +51,11 @@ pub fn walk_path<'a>(
     }
     Err(WalkError::CantWalk)
 }
+
+pub fn owned_walk_path<'a>(
+    breadcrumbs: &Vec<Box<dyn ContextElement>>,
+    path: &Vec<String>,
+) -> Result<&'a dyn ContextElement, WalkError> {
+    // TODO: Implement owned_walk_path
+    Err(WalkError::CantWalk)
+}