Add NotImplementedError just to be clear

Signed-off-by: Fabrice Normandin <[email protected]>

Author: lebrice

hydra_plugins/job_dependency_launcher/launcher.py

@@ -303,4 +303,5 @@ def setup(
 
     def launch(
         self, job_overrides: Sequence[Sequence[str]], initial_job_idx: int
-    ) -> Sequence[JobReturn]: ...
+    ) -> Sequence[JobReturn]:
+        raise NotImplementedError()