docs: function(conn)
      {
      this._connection = conn;
          this._identities = [];
          this._features   = [];
          this._items      = [];
          // disco info
          conn.addHandler(this._onDiscoInfo.bind(this), Strophe.NS.DISCO_INFO, 'iq', 'get', null, null);
          // disco items
          conn.addHandler(this._onDiscoItems.bind(this), Strophe.NS.DISCO_ITEMS, 'iq', 'get', null, null);
      }