GH-211: handle non-existent retry listeners #393
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Hi. Guys.
I wanted to handle GH-211 issue, and @artembilan gave me a good suggestion. I came up with two ways and was preparing two different PRs.
The first is to literally ignore all listeners when the
listeners
attribute is set to""
.The second is that when the
listeners
attribute is set to a non-existent listener, it will have the same effect as a listener without any configuration.The first implementation seems to have been implemented nicely by akenra in this PR. So, I'm posting a PR for the second implementation as well.