dcapwell commented on code in PR #4220:
URL: https://github.com/apache/cassandra/pull/4220#discussion_r2219576825


##########
test/simulator/main/org/apache/cassandra/simulator/Actions.java:
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@@ -33,6 +33,24 @@
 
 public class Actions
 {
+    public static class EmptyAction extends Action

Review Comment:
   > rather than no action at all?
   you mean return `null`?
   
   The use case is a action is selected in the AST logic, but it can't apply 
given the current state of the model (can't select a known partition if there 
are no partitions), so need a way to detect this and retry with a different 
action



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