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Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: haochengxia

examples/admission/plugin_admissioner.py

@@ -26,7 +26,7 @@ def admit_hook(data, request):
 
 
 def clone_hook():
-    pass
+    raise NotImplementedError("Cloning for this plugin admissioner is not supported.")
 
 
 def update_hook(data, request, cs):