query
jabber:iq:private
org.jivesoftware.smackx.PrivateDataManager$PrivateDataIQProvider
query
jabber:iq:time
org.jivesoftware.smackx.packet.Time
x
jabber:x:roster
org.jivesoftware.smackx.provider.RosterExchangeProvider
x
jabber:x:event
org.jivesoftware.smackx.provider.MessageEventProvider
html
http://jabber.org/protocol/xhtml-im
org.jivesoftware.smackx.provider.XHTMLExtensionProvider