code: function(options, success, response) {
          var me = this,
              i, len, events, event, transaction, transactions;
              
          if (success) {
              events = me.createEvents(response);
  
              for (i = 0, len = events.length; i < len; ++i) {
                  event = events[i];
                  transaction = me.getTransaction(event);
                  me.fireEvent('data', me, event);
  
                  if (transaction && me.fireEvent('beforecallback', me, event, transaction) !== false) {
                      me.runCallback(transaction, event, true);
                      Ext.direct.Manager.removeTransaction(transaction);
                  }
              }
          }
          else {
              transactions = [].concat(options.transaction);
              
              for (i = 0, len = transactions.length; i < len; ++i) {
                  transaction = me.getTransaction(transactions[i]);
  
                  if (transaction && transaction.retryCount < me.maxRetries) {
                      transaction.retry();
                  }
                  else {
                      event = new Ext.direct.ExceptionEvent({
                          data: null,
                          transaction: transaction,
                          code: Ext.direct.Manager.exceptions.TRANSPORT,
                          message: 'Unable to connect to the server.',
                          xhr: response
                      });
  
                      me.fireEvent('data', me, event);
  
                      if (transaction && me.fireEvent('beforecallback', me, transaction) !== false) {
                          me.runCallback(transaction, event, false);
                          Ext.direct.Manager.removeTransaction(transaction);
                      }
                  }
              }
          }
      }
docs: React to the ajax request being completed
  
  @private