# File lib/jabber4r/protocol.rb, line 501
      def Iq.gen_auth(session, id, username, password, resource)
        iq = Iq.new(session, id)
        iq.type = "set"
        iq.xmlns = "jabber:iq:auth"
        iq.data = XMLElement.new("username").add_data(username).to_s 
        iq.data << XMLElement.new("password").add_data(password).to_s
        iq.data << XMLElement.new("resource").add_data(resource).to_s
        return iq
        #element = XMLElement.new("iq", {"type"=>"set", "id"=>id}).add_child("query", {"xmlns"=>"jabber:iq:auth"}).add_child("username").add_data(username).to_parent.add_child("password").add_data(password).to_parent.add_child("resource").add_data(resource).to_parent.to_s
      end