XMPP Multi user chat setting avatar image for the group chat
I am developing an iOS application with chat features. I am using XMPP for that application. In XMPP Multi user chat, whether any feature is available to set avatar image or group image for the conference room like the one we do in whatsapp? I have checked XEP-0045 extension but it wasn't helpful, So I checked with Psi by creating conference rooms, I came to understand that the user has vcard so he can store his avatar image but the XMPP doesn't provide any vcards for the groups we create. Now I possibly understand why its not available. Yet I can't convince how whatsapp is able to achieve. I