code: function(obj) {
      var accessors = obj.accessors;
      if (accessors) {
        createAccessorsFromArray(obj, obj.accessors, d3.keys(accessors));
      }
    }
docs: In order to have a uniform API, objects with accessors, need to have wrapper functions created for them so that users may access them in the declarative nature we promote. This function will take an object, which contains an accessors key and create the wrapper function for each accessor item. This function is used internally by the feature mixin and axes objects.