code: function off(type, listener) {
        var object = this,
            events = object.events;
  
        if (!events) {
          return object;
        }
        _.each(type ? type.split(' ') : events, function(listeners, type) {
          var index;
          if (typeof listeners == 'string') {
            type = listeners;
            listeners = _.has(events, type) && events[type];
          }
          if (listeners) {
            if (listener) {
              index = _.indexOf(listeners, listener);
              if (index > -1) {
                listeners.splice(index, 1);
              }
            } else {
              listeners.length = 0;
            }
          }
        });
        return object;
      }
docs: Unregisters a listener for the specified event type(s),
  or unregisters all listeners for the specified event type(s),
  or unregisters all listeners for all event types.
  
  @memberOf Benchmark, Benchmark.Suite
  @param {string} [type] The event type.
  @param {Function} [listener] The function to unregister.
  @returns {Object} The current instance.
  @example
  
  // unregister a listener for an event type
  bench.off('cycle', listener);
  
  // unregister a listener for multiple event types
  bench.off('start cycle', listener);
  
  // unregister all listeners for an event type
  bench.off('cycle');
  
  // unregister all listeners for multiple event types
  bench.off('start cycle complete');
  
  // unregister all listeners for all event types
  bench.off();