diff --git a/tools/aconfig/templates/FeatureFlagsImpl.java.template b/tools/aconfig/templates/FeatureFlagsImpl.java.template
index ba86ce5..7e1eb15 100644
--- a/tools/aconfig/templates/FeatureFlagsImpl.java.template
+++ b/tools/aconfig/templates/FeatureFlagsImpl.java.template
@@ -29,5 +29,16 @@
             "Method is not implemented.");
     }
 {{ endfor- }}
+    @Override
+    public void setFlag(String flagName, boolean value) \{
+        throw new UnsupportedOperationException(
+            "Method is not implemented.");
+    }
+
+    @Override
+    public void resetAll() \{
+        throw new UnsupportedOperationException(
+            "Method is not implemented.");
+    }
 }
 {{ endif }}