I wish to run cloud code just before a custom message (that was added in Configurator -> Messages -> ScriptMessage Extensions) is sent using SparkMessage.send().
The documentation leads me to believe this is possible using message interceptors (https://docs.gamesparks.com/documentation/key-concepts/cloud-code.html#message-interceptors)
but in my Scripts -> User/Global Messages there is no entry for the custom message.
Is the documentation up-to-date?
Do I need to do something more in order to get a <CustomMessage> entry in there, or am I limited to running code against standard platform messages?
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