diff --git a/common/NQP/NQPSetting.pm b/common/NQP/NQPSetting.pm
index 5729c6a..aa7b5b0 100644
--- a/common/NQP/NQPSetting.pm
+++ b/common/NQP/NQPSetting.pm
@@ -789,6 +789,9 @@ my knowhow NQPStash {
     method bind_key($name, $value) {
         $!entries.bind_key($name, $value)
     }
+    method defined() {
+        nqp::repr_defined(self)
+    }
 }
 
 ::GLOBAL := NQPStash.new('GLOBAL');