function filterSuite(callback) {
    var me = this,
        result = new me.constructor;

    result.push.apply(result, filter(me, callback));
    return result;
  }
An `Array#filter` like method.

@name filter
@memberOf Benchmark.Suite
@param {Function|String} callback The function/alias called per iteration.
@returns {Object} A new suite of benchmarks that passed callback filter.