code: function(node,options, call_back) {
          var that = this._connection;
  
          var iqid = that.getUniqueId("pubsubcreatenode");
  
          var iq = $iq({from:this.jid, to:this.service, type:'set', id:iqid})
            .c('pubsub', {xmlns:Strophe.NS.PUBSUB})
            .c('create',{node:node});
          if(options) {
              iq.up().c('configure').form(Strophe.NS.PUBSUB_NODE_CONFIG, options);
          }
  
          that.addHandler(call_back, null, 'iq', null, iqid, null);
          that.send(iq.tree());
          return iqid;
      }
docs: *Function
  
  Create a pubsub node on the given service with the given node
  name.
  
  Parameters:
  (String) node -  The name of the pubsub node.
  (Dictionary) options -  The configuration options for the  node.
  (Function) call_back - Used to determine if node
  creation was sucessful.
  
  Returns:
  Iq id used to send subscription.