How to parse Muc Sub events packet using Smack 4

I am developing a chat app. And I have a performance problem when my app get start. I am using Muc and ejabberd in server side. The thing is I have to join all the rooms and set A EnterConfigurations to get the Archives. I found that Ejabberd has Muc sub but smack does not have that implemented to parse Incoming Event packets. Does any one have implementation of mucsub using smack 4?

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