Required files
xmpp4r/pubsub/iq/pubsub
xmpp4r/pubsub/children/event
xmpp4r/pubsub/children/item
xmpp4r/pubsub/children/items
xmpp4r/pubsub/children/publish
xmpp4r/pubsub/children/subscription
xmpp4r/pubsub/children/unsubscribe
xmpp4r/pubsub/helper/servicehelper