Github user LucasMadar commented on the issue:
https://github.com/apache/curator/pull/212
Looks like you're correct. I also did the same below with 2.12.0 (the
version we're using). Thanks for investigating; sorry for the trouble.
```
$ wget
http://central.maven.org/maven2/org/apache/curator/curator-framework/3.3.0/curator-framework-3.3.0.jar
$ jar xvf curator-framework-3.3.0.jar
$ javap -c org/apache/curator/framework/listen/ListenerContainer.class
public void addListener(T);
Code:
0: aload_0
1: aload_1
2: invokestatic #50 // Method
org/apache/curator/shaded/com/google/common/util/concurrent/MoreExecutors.sameThreadExecutor:()Lorg/apache/curator/shaded/com/google/common/util/concurrent/ListeningExecutorService;
5: invokevirtual #53 // Method
addListener:(Ljava/lang/Object;Ljava/util/concurrent/Executor;)V
8: return
```
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