diff --git a/libimagref/src/reference.rs b/libimagref/src/reference.rs
index 151afe4c..f79f01b4 100644
--- a/libimagref/src/reference.rs
+++ b/libimagref/src/reference.rs
@@ -59,6 +59,11 @@ impl<'a> Ref<'a> {
         unimplemented!()
     }
 
+    /// Alias for `r.fs_link_exists() && r.deref().is_dir()`
+    pub fn is_ref_to_dir(&self) -> bool {
+        unimplemented!()
+    }
+
     /// Alias for `!Ref::fs_link_exists()`
     pub fn is_dangling(&self) -> bool {
         !self.fs_link_exists()