Imported Upstream version 1.5.3
diff --git a/test/model/default/classes/second.yml b/test/model/default/classes/second.yml
new file mode 100644
index 0000000..dab50c7
--- /dev/null
+++ b/test/model/default/classes/second.yml
@@ -0,0 +1,9 @@
+classes:
+- first
+
+parameters:
+  will:
+    warn:
+      at:
+        second: ${_param:notfound}
+  three: ${one}