1 files changed, 5 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 2407115..cbd32b2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -127,6 +127,11 @@ pub trait PatternTypes {
         left: RefOwn<'_, Self::Ref, Self::Own>,
         right: RefOwn<'_, Self::Ref, Self::Own>
     ) -> bool;
+
+    /// Returns the value as an &str.
+    fn as_str<'b>(
+        value: RefOwn<'b, Self::Ref, Self::Own>
+    ) -> Option<&'b str>;
 }
 
 // TODO