diff --git a/engine/src/conversion/api.rs b/engine/src/conversion/api.rs
index 3d04674..c5a1b60 100644
--- a/engine/src/conversion/api.rs
+++ b/engine/src/conversion/api.rs
@@ -54,7 +54,6 @@
 
 /// Details about a C++ struct.
 pub(crate) struct StructDetails {
-    pub(crate) vis: CppVisibility,
     pub(crate) item: ItemStruct,
     pub(crate) layout: Option<Layout>,
     pub(crate) has_rvalue_reference_fields: bool,
@@ -713,3 +712,10 @@
         Ok(Box::new(std::iter::once(Api::Enum { name, item })))
     }
 }
+
+/// Whether a type is a pointer of some kind.
+pub(crate) enum Pointerness {
+    Not,
+    ConstPtr,
+    MutPtr,
+}