Anyone knows how to chat in goup(MUC chat) with matrix xmpp??Any references?

I haven't found any references about muc on the official web site, Any one gives me a better link?

 

The SDK should work in Unity and then it would function just like any other c# environment

https://www.ag-software.net/matrix-xmpp-sdk/
https://www.ag-software.net/matrix-xmpp-sdk/matrix-developer-tutorial/#client-connection

 

I checked these links, but I don't find any demo on multi user chat, or api references........ Could you attach a piece of code about muc?? like request to enter a room, or send message.
Thanks