code: function(method, arr/*, arguments*/) {
      var args = [].slice.call(arguments, 2);
      utils.arrayify(arr || []).forEach(function (obj) {
        this[method](obj, args);
      }.bind(this));
      return this;
    }
docs: Map the given `method` over `array`.
  
  @param  {String} `method`
  @param  {Array} `arr`
  @return {Object} `this` for chaining