function listeners(type) {
    var me = this,
        events = me.events || (me.events = {});

    return hasKey(events, type) ? events[type] : (events[type] = []);
  }
Returns an array of event listeners for a given type that can be manipulated
to add or remove listeners.

@memberOf Benchmark, Benchmark.Suite
@param {String} type The event type.
@returns {Array} The listeners array.